1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #ifndef MAX_NR_CONTROLLER_ACL_BUFFERS 97 #define MAX_NR_CONTROLLER_ACL_BUFFERS 255 98 #endif 99 #ifndef MAX_NR_CONTROLLER_SCO_PACKETS 100 #define MAX_NR_CONTROLLER_SCO_PACKETS 255 101 #endif 102 103 #ifndef HCI_ACL_CHUNK_SIZE_ALIGNMENT 104 #define HCI_ACL_CHUNK_SIZE_ALIGNMENT 1 105 #endif 106 107 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 108 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 109 #endif 110 111 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 112 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 113 #endif 114 115 #define HCI_CONNECTION_TIMEOUT_MS 10000 116 117 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 118 #define HCI_RESET_RESEND_TIMEOUT_MS 200 119 #endif 120 121 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 122 #ifndef GAP_INQUIRY_MAX_NAME_LEN 123 #define GAP_INQUIRY_MAX_NAME_LEN 32 124 #endif 125 126 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 127 #define GAP_INQUIRY_DURATION_MIN 0x01 128 #define GAP_INQUIRY_DURATION_MAX 0x30 129 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 130 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 131 #define GAP_INQUIRY_STATE_IDLE 0x00 132 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 133 #define GAP_INQUIRY_STATE_ACTIVE 0x81 134 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 135 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 136 #define GAP_INQUIRY_STATE_PERIODIC 0x84 137 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 138 139 // GAP Remote Name Request 140 #define GAP_REMOTE_NAME_STATE_IDLE 0 141 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 142 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 143 144 // GAP Pairing 145 #define GAP_PAIRING_STATE_IDLE 0 146 #define GAP_PAIRING_STATE_SEND_PIN 1 147 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 148 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 149 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 150 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 151 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 152 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 153 154 // 155 // compact storage of relevant supported HCI Commands. 156 // X-Macro below provides enumeration and mapping table into the supported 157 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 158 // 159 160 // format: command name, byte offset, bit nr in 64-byte supported commands 161 // currently stored in 32-bit variable 162 #define SUPPORTED_HCI_COMMANDS \ 163 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 164 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 165 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 166 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 167 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 168 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 169 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 170 X( SUPPORTED_HCI_COMMAND_LE_READ_REMOTE_FEATURES , 27, 5) \ 171 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 172 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 173 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 174 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 175 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 176 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 177 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 178 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 179 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 180 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 181 182 // enumerate supported commands 183 #define X(name, offset, bit) name, 184 enum { 185 SUPPORTED_HCI_COMMANDS 186 SUPPORTED_HCI_COMMANDS_COUNT 187 }; 188 #undef X 189 190 // prototypes 191 #ifdef ENABLE_CLASSIC 192 static void hci_update_scan_enable(void); 193 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 194 static int hci_local_ssp_activated(void); 195 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 196 static bool hci_ssp_supported(hci_connection_t * connection); 197 static void hci_notify_if_sco_can_send_now(void); 198 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 199 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 200 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 201 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 202 static void hci_connection_timestamp(hci_connection_t *connection); 203 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 204 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 205 #endif 206 207 static int hci_power_control_on(void); 208 static void hci_power_control_off(void); 209 static void hci_state_reset(void); 210 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 211 static void hci_emit_transport_packet_sent(void); 212 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 213 static void hci_emit_nr_connections_changed(void); 214 static void hci_emit_hci_open_failed(void); 215 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 216 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 217 static void hci_emit_btstack_event(uint8_t * event, uint16_t size, int dump); 218 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 219 static void hci_run(void); 220 static bool hci_is_le_connection(hci_connection_t * connection); 221 static uint8_t hci_send_prepared_cmd_packet(void); 222 223 #ifdef ENABLE_CLASSIC 224 static int hci_have_usb_transport(void); 225 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 226 #endif 227 228 #ifdef ENABLE_BLE 229 static bool hci_run_general_gap_le(void); 230 static void gap_privacy_clients_handle_ready(void); 231 static void gap_privacy_clients_notify(bd_addr_t new_random_address); 232 #ifdef ENABLE_LE_CENTRAL 233 // called from test/ble_client/advertising_data_parser.c 234 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 235 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 236 static hci_connection_t * gap_get_outgoing_le_connection(void); 237 static void hci_le_scan_stop(void); 238 #endif 239 #ifdef ENABLE_LE_PERIPHERAL 240 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 241 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 242 static uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len); 243 static void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size); 244 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 245 #endif /* ENABLE_LE_PERIPHERAL */ 246 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 247 static hci_iso_stream_t * hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id); 248 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 249 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id); 250 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 251 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 252 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 253 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size); 254 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 255 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id); 256 static void hci_iso_notify_can_send_now(void); 257 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 258 static void hci_emit_big_terminated(const le_audio_big_t * big); 259 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 260 static void hci_emit_big_sync_stopped(uint8_t big_handle); 261 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status); 262 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status); 263 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 264 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 265 #endif /* ENABLE_BLE */ 266 267 // the STACK is here 268 #ifndef HAVE_MALLOC 269 static hci_stack_t hci_stack_static; 270 #endif 271 static hci_stack_t * hci_stack = NULL; 272 273 #ifdef ENABLE_CLASSIC 274 // default name 275 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 276 277 // test helper 278 static uint8_t disable_l2cap_timeouts = 0; 279 #endif 280 281 // reset connection state on create and on reconnect 282 // don't overwrite addr, con handle, role 283 static void hci_connection_init(hci_connection_t * conn){ 284 conn->authentication_flags = AUTH_FLAG_NONE; 285 conn->bonding_flags = 0; 286 conn->requested_security_level = LEVEL_0; 287 conn->link_key_type = INVALID_LINK_KEY; 288 #ifdef ENABLE_CLASSIC 289 conn->request_role = HCI_ROLE_INVALID; 290 conn->sniff_subrating_max_latency = 0xffff; 291 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 292 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 293 btstack_run_loop_set_timer_context(&conn->timeout, conn); 294 hci_connection_timestamp(conn); 295 #endif 296 conn->acl_recombination_length = 0; 297 conn->acl_recombination_pos = 0; 298 conn->num_packets_sent = 0; 299 300 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 301 #ifdef ENABLE_BLE 302 conn->le_phy_update_all_phys = 0xff; 303 #endif 304 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 305 conn->le_max_tx_octets = 27; 306 #endif 307 #ifdef ENABLE_CLASSIC_PAIRING_OOB 308 conn->classic_oob_c_192 = NULL; 309 conn->classic_oob_r_192 = NULL; 310 conn->classic_oob_c_256 = NULL; 311 conn->classic_oob_r_256 = NULL; 312 #endif 313 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 314 conn->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 315 conn->le_past_advertising_handle = 0xff; 316 #endif 317 } 318 319 /** 320 * create connection for given address 321 * 322 * @return connection OR NULL, if no memory left 323 */ 324 static hci_connection_t * 325 create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type, hci_role_t role) { 326 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 327 328 hci_connection_t * conn = btstack_memory_hci_connection_get(); 329 if (!conn) return NULL; 330 hci_connection_init(conn); 331 332 bd_addr_copy(conn->address, addr); 333 conn->address_type = addr_type; 334 conn->con_handle = HCI_CON_HANDLE_INVALID; 335 conn->role = role; 336 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 337 338 return conn; 339 } 340 341 342 /** 343 * get le connection parameter range 344 * 345 * @return le connection parameter range struct 346 */ 347 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 348 *range = hci_stack->le_connection_parameter_range; 349 } 350 351 /** 352 * set le connection parameter range 353 * 354 */ 355 356 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 357 hci_stack->le_connection_parameter_range = *range; 358 } 359 360 /** 361 * @brief Test if connection parameters are inside in existing rage 362 * @param conn_interval_min (unit: 1.25ms) 363 * @param conn_interval_max (unit: 1.25ms) 364 * @param conn_latency 365 * @param supervision_timeout (unit: 10ms) 366 * @return 1 if included 367 */ 368 int gap_connection_parameter_range_included(le_connection_parameter_range_t * existing_range, uint16_t le_conn_interval_min, uint16_t le_conn_interval_max, uint16_t le_conn_latency, uint16_t le_supervision_timeout){ 369 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 370 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 371 372 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 373 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 374 375 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 376 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 377 378 return 1; 379 } 380 381 /** 382 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 383 * @note: default: 1 384 * @param max_peripheral_connections 385 */ 386 #ifdef ENABLE_LE_PERIPHERAL 387 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 388 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 389 } 390 #endif 391 392 /** 393 * get hci connections iterator 394 * 395 * @return hci connections iterator 396 */ 397 398 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 399 btstack_linked_list_iterator_init(it, &hci_stack->connections); 400 } 401 402 /** 403 * get connection for a given handle 404 * 405 * @return connection OR NULL, if not found 406 */ 407 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 408 btstack_linked_list_iterator_t it; 409 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 410 while (btstack_linked_list_iterator_has_next(&it)){ 411 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 412 if ( item->con_handle == con_handle ) { 413 return item; 414 } 415 } 416 return NULL; 417 } 418 419 /** 420 * get connection for given address 421 * 422 * @return connection OR NULL, if not found 423 */ 424 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 425 btstack_linked_list_iterator_t it; 426 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 427 while (btstack_linked_list_iterator_has_next(&it)){ 428 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 429 if (connection->address_type != addr_type) continue; 430 if (memcmp(addr, connection->address, 6) != 0) continue; 431 return connection; 432 } 433 return NULL; 434 } 435 436 #ifdef ENABLE_CLASSIC 437 438 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 439 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 440 } 441 442 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 443 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 444 } 445 446 #ifdef ENABLE_SCO_OVER_HCI 447 static int hci_number_sco_connections(void){ 448 int connections = 0; 449 btstack_linked_list_iterator_t it; 450 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 451 while (btstack_linked_list_iterator_has_next(&it)){ 452 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 453 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 454 connections++; 455 } 456 return connections; 457 } 458 #endif 459 460 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 461 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 462 #ifdef HAVE_EMBEDDED_TICK 463 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 464 // connections might be timed out 465 hci_emit_l2cap_check_timeout(connection); 466 } 467 #else 468 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 469 // connections might be timed out 470 hci_emit_l2cap_check_timeout(connection); 471 } 472 #endif 473 } 474 475 static void hci_connection_timestamp(hci_connection_t *connection){ 476 #ifdef HAVE_EMBEDDED_TICK 477 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 478 #else 479 connection->timestamp = btstack_run_loop_get_time_ms(); 480 #endif 481 } 482 483 /** 484 * add authentication flags and reset timer 485 * @note: assumes classic connection 486 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 487 */ 488 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 489 bd_addr_t addr; 490 reverse_bd_addr(bd_addr, addr); 491 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 492 if (conn) { 493 connectionSetAuthenticationFlags(conn, flags); 494 hci_connection_timestamp(conn); 495 } 496 } 497 498 static bool hci_pairing_active(hci_connection_t * hci_connection){ 499 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 500 } 501 502 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 503 if (hci_pairing_active(hci_connection)) return; 504 if (ssp){ 505 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 506 } else { 507 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 508 } 509 // if we are initiator, we have sent an HCI Authenticate Request 510 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 511 512 // if we are responder, use minimal service security level as required level 513 if (!initiator){ 514 hci_connection->requested_security_level = (gap_security_level_t) btstack_max((uint32_t) hci_connection->requested_security_level, (uint32_t) hci_stack->gap_minimal_service_security_level); 515 } 516 517 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 518 519 uint8_t event[12]; 520 event[0] = GAP_EVENT_PAIRING_STARTED; 521 event[1] = 10; 522 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 523 reverse_bd_addr(hci_connection->address, &event[4]); 524 event[10] = (uint8_t) ssp; 525 event[11] = (uint8_t) initiator; 526 hci_emit_btstack_event(event, sizeof(event), 1); 527 } 528 529 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 530 hci_connection->requested_security_level = LEVEL_0; 531 if (!hci_pairing_active(hci_connection)) return; 532 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 533 #ifdef ENABLE_CLASSIC_PAIRING_OOB 534 hci_connection->classic_oob_c_192 = NULL; 535 hci_connection->classic_oob_r_192 = NULL; 536 hci_connection->classic_oob_c_256 = NULL; 537 hci_connection->classic_oob_r_256 = NULL; 538 #endif 539 log_info("pairing complete, status %02x", status); 540 541 uint8_t event[11]; 542 event[0] = GAP_EVENT_PAIRING_COMPLETE; 543 event[1] = 9; 544 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 545 reverse_bd_addr(hci_connection->address, &event[4]); 546 event[10] = status; 547 hci_emit_btstack_event(event, sizeof(event), 1); 548 549 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 550 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 551 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 552 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 553 hci_connection->bonding_status = status; 554 } 555 } 556 557 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 558 hci_connection_t * conn = hci_connection_for_handle(handle); 559 if (!conn) return false; 560 return hci_pairing_active(conn); 561 } 562 563 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 564 if (!hci_stack->link_key_db) return; 565 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 566 hci_stack->link_key_db->delete_link_key(addr); 567 } 568 569 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 570 if (!hci_stack->link_key_db) return; 571 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 572 hci_stack->link_key_db->put_link_key(addr, link_key, type); 573 } 574 575 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 576 if (!hci_stack->link_key_db) return false; 577 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 578 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 579 return result; 580 } 581 582 void gap_delete_all_link_keys(void){ 583 bd_addr_t addr; 584 link_key_t link_key; 585 link_key_type_t type; 586 btstack_link_key_iterator_t it; 587 int ok = gap_link_key_iterator_init(&it); 588 if (!ok) { 589 log_error("could not initialize iterator"); 590 return; 591 } 592 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 593 gap_drop_link_key_for_bd_addr(addr); 594 } 595 gap_link_key_iterator_done(&it); 596 } 597 598 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 599 if (!hci_stack->link_key_db) return 0; 600 if (!hci_stack->link_key_db->iterator_init) return 0; 601 return hci_stack->link_key_db->iterator_init(it); 602 } 603 int gap_link_key_iterator_get_next(btstack_link_key_iterator_t * it, bd_addr_t bd_addr, link_key_t link_key, link_key_type_t * type){ 604 if (!hci_stack->link_key_db) return 0; 605 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 606 } 607 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 608 if (!hci_stack->link_key_db) return; 609 hci_stack->link_key_db->iterator_done(it); 610 } 611 #endif 612 613 bool hci_is_le_connection_type(bd_addr_type_t address_type){ 614 switch (address_type){ 615 case BD_ADDR_TYPE_LE_PUBLIC: 616 case BD_ADDR_TYPE_LE_RANDOM: 617 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 618 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 619 return true; 620 default: 621 return false; 622 } 623 } 624 625 bool hci_is_le_identity_address_type(bd_addr_type_t address_type){ 626 switch (address_type){ 627 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 628 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 629 return true; 630 default: 631 return false; 632 } 633 } 634 635 static bool hci_is_le_connection(hci_connection_t * connection){ 636 return hci_is_le_connection_type(connection->address_type); 637 } 638 639 /** 640 * count connections 641 */ 642 static int nr_hci_connections(void){ 643 int count = 0; 644 btstack_linked_item_t *it; 645 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 646 count++; 647 } 648 return count; 649 } 650 651 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 652 653 unsigned int num_packets_sent_classic = 0; 654 unsigned int num_packets_sent_le = 0; 655 656 btstack_linked_item_t *it; 657 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 658 hci_connection_t * connection = (hci_connection_t *) it; 659 if (hci_is_le_connection(connection)){ 660 num_packets_sent_le += connection->num_packets_sent; 661 } 662 if (connection->address_type == BD_ADDR_TYPE_ACL){ 663 num_packets_sent_classic += connection->num_packets_sent; 664 } 665 } 666 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 667 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 668 int free_slots_le = 0; 669 670 if (free_slots_classic < 0){ 671 log_error("hci_number_free_acl_slots: outgoing classic packets (%u) > total classic packets (%u)", num_packets_sent_classic, hci_stack->acl_packets_total_num); 672 return 0; 673 } 674 675 if (hci_stack->le_acl_packets_total_num){ 676 // if we have LE slots, they are used 677 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 678 if (free_slots_le < 0){ 679 log_error("hci_number_free_acl_slots: outgoing le packets (%u) > total le packets (%u)", num_packets_sent_le, hci_stack->le_acl_packets_total_num); 680 return 0; 681 } 682 } else { 683 // otherwise, classic slots are used for LE, too 684 free_slots_classic -= num_packets_sent_le; 685 if (free_slots_classic < 0){ 686 log_error("hci_number_free_acl_slots: outgoing classic + le packets (%u + %u) > total packets (%u)", num_packets_sent_classic, num_packets_sent_le, hci_stack->acl_packets_total_num); 687 return 0; 688 } 689 } 690 691 switch (address_type){ 692 case BD_ADDR_TYPE_UNKNOWN: 693 log_error("hci_number_free_acl_slots: unknown address type"); 694 return 0; 695 696 case BD_ADDR_TYPE_ACL: 697 return (uint16_t) free_slots_classic; 698 699 default: 700 if (hci_stack->le_acl_packets_total_num > 0){ 701 return (uint16_t) free_slots_le; 702 } 703 return (uint16_t) free_slots_classic; 704 } 705 } 706 707 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 708 // get connection type 709 hci_connection_t * connection = hci_connection_for_handle(con_handle); 710 if (!connection){ 711 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 712 return 0; 713 } 714 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 715 } 716 717 #ifdef ENABLE_CLASSIC 718 static int hci_number_free_sco_slots(void){ 719 unsigned int num_sco_packets_sent = 0; 720 btstack_linked_item_t *it; 721 if (hci_stack->synchronous_flow_control_enabled){ 722 // explicit flow control 723 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 724 hci_connection_t * connection = (hci_connection_t *) it; 725 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 726 num_sco_packets_sent += connection->num_packets_sent; 727 } 728 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 729 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 730 return 0; 731 } 732 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 733 } else { 734 // implicit flow control 735 int num_ready = 0; 736 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 737 hci_connection_t * connection = (hci_connection_t *) it; 738 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 739 if (connection->sco_tx_ready == 0) continue; 740 num_ready++; 741 } 742 return num_ready; 743 } 744 } 745 #endif 746 747 // only used to send HCI Host Number Completed Packets 748 static int hci_can_send_comand_packet_transport(void){ 749 if (hci_stack->hci_packet_buffer_reserved) return 0; 750 751 // check for async hci transport implementations 752 if (hci_stack->hci_transport->can_send_packet_now){ 753 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 754 return 0; 755 } 756 } 757 return 1; 758 } 759 760 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 761 bool hci_can_send_command_packet_now(void){ 762 if (hci_can_send_comand_packet_transport() == 0) return false; 763 return hci_stack->num_cmd_packets > 0u; 764 } 765 766 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 767 // check for async hci transport implementations 768 if (!hci_stack->hci_transport->can_send_packet_now) return true; 769 return hci_stack->hci_transport->can_send_packet_now(packet_type); 770 } 771 772 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 773 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 774 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 775 } 776 777 bool hci_can_send_acl_le_packet_now(void){ 778 if (hci_stack->hci_packet_buffer_reserved) return false; 779 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 780 } 781 782 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 783 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 784 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 785 } 786 787 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 788 if (hci_stack->hci_packet_buffer_reserved) return false; 789 return hci_can_send_prepared_acl_packet_now(con_handle); 790 } 791 792 #ifdef ENABLE_CLASSIC 793 bool hci_can_send_acl_classic_packet_now(void){ 794 if (hci_stack->hci_packet_buffer_reserved) return false; 795 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 796 } 797 798 bool hci_can_send_prepared_sco_packet_now(void){ 799 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 800 if (hci_have_usb_transport()){ 801 return hci_stack->sco_can_send_now; 802 } else { 803 return hci_number_free_sco_slots() > 0; 804 } 805 } 806 807 bool hci_can_send_sco_packet_now(void){ 808 if (hci_stack->hci_packet_buffer_reserved) return false; 809 return hci_can_send_prepared_sco_packet_now(); 810 } 811 812 void hci_request_sco_can_send_now_event(void){ 813 hci_stack->sco_waiting_for_can_send_now = 1; 814 hci_notify_if_sco_can_send_now(); 815 } 816 #endif 817 818 // used for internal checks in l2cap.c 819 bool hci_is_packet_buffer_reserved(void){ 820 return hci_stack->hci_packet_buffer_reserved; 821 } 822 823 void hci_reserve_packet_buffer(void){ 824 btstack_assert(hci_stack->hci_packet_buffer_reserved == false); 825 hci_stack->hci_packet_buffer_reserved = true; 826 } 827 828 void hci_release_packet_buffer(void){ 829 btstack_assert(hci_stack->hci_packet_buffer_reserved); 830 hci_stack->hci_packet_buffer_reserved = false; 831 hci_emit_transport_packet_sent(); 832 } 833 834 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 835 static int hci_transport_synchronous(void){ 836 return hci_stack->hci_transport->can_send_packet_now == NULL; 837 } 838 839 // used for debugging 840 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 841 static void hci_controller_dump_packets(void){ 842 // format: "{handle:04x}:{count:02d} " 843 char summaries[3][7 * 8 + 1]; 844 uint16_t totals[3]; 845 uint8_t index; 846 for (index = 0 ; index < 3 ; index++){ 847 summaries[index][0] = 0; 848 totals[index] = 0; 849 } 850 btstack_linked_item_t *it; 851 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 852 hci_connection_t * connection = (hci_connection_t *) it; 853 switch (connection->address_type){ 854 case BD_ADDR_TYPE_ACL: 855 index = 0; 856 break; 857 case BD_ADDR_TYPE_SCO: 858 index = 2; 859 break; 860 default: 861 index = 1; 862 break; 863 } 864 totals[index] += connection->num_packets_sent; 865 char item_text[10]; 866 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 867 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 868 } 869 for (index = 0 ; index < 3 ; index++){ 870 if (summaries[index][0] == 0){ 871 summaries[index][0] = '-'; 872 summaries[index][1] = 0; 873 } 874 } 875 log_info("Controller ACL BR/EDR: %s total %u / LE: %s total %u / SCO: %s total %u", summaries[0], totals[0], summaries[1], totals[1], summaries[2], totals[2]); 876 } 877 #endif 878 879 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 880 881 // log_info("hci_send_acl_packet_fragments %u/%u (con 0x%04x)", hci_stack->acl_fragmentation_pos, hci_stack->acl_fragmentation_total_size, connection->con_handle); 882 883 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 884 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 885 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 886 max_acl_data_packet_length = hci_stack->le_data_packets_length; 887 } 888 889 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 890 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 891 max_acl_data_packet_length = connection->le_max_tx_octets; 892 } 893 #endif 894 895 log_debug("hci_send_acl_packet_fragments entered"); 896 897 uint8_t status = ERROR_CODE_SUCCESS; 898 // multiple packets could be send on a synchronous HCI transport 899 while (true){ 900 901 log_debug("hci_send_acl_packet_fragments loop entered"); 902 903 // get current data 904 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 905 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 906 bool more_fragments = false; 907 908 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 909 if (current_acl_data_packet_length > max_acl_data_packet_length){ 910 more_fragments = true; 911 current_acl_data_packet_length = max_acl_data_packet_length & (~(HCI_ACL_CHUNK_SIZE_ALIGNMENT-1)); 912 } 913 914 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 915 if (acl_header_pos > 0u){ 916 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 917 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 918 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 919 } 920 921 // update header len 922 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 923 924 // count packet 925 connection->num_packets_sent++; 926 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 927 928 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 929 if (more_fragments){ 930 // update start of next fragment to send 931 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 932 } else { 933 // done 934 hci_stack->acl_fragmentation_pos = 0; 935 hci_stack->acl_fragmentation_total_size = 0; 936 } 937 938 // send packet 939 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 940 const int size = current_acl_data_packet_length + 4; 941 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 942 hci_stack->acl_fragmentation_tx_active = 1; 943 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 944 if (err != 0){ 945 // no error from HCI Transport expected 946 status = ERROR_CODE_HARDWARE_FAILURE; 947 break; 948 } 949 950 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 951 hci_controller_dump_packets(); 952 #endif 953 954 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 955 956 // done yet? 957 if (!more_fragments) break; 958 959 // can send more? 960 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 961 } 962 963 log_debug("hci_send_acl_packet_fragments loop over"); 964 965 // release buffer now for synchronous transport 966 if (hci_transport_synchronous()){ 967 hci_stack->acl_fragmentation_tx_active = 0; 968 hci_release_packet_buffer(); 969 } 970 971 return status; 972 } 973 974 // pre: caller has reserved the packet buffer 975 uint8_t hci_send_acl_packet_buffer(int size){ 976 btstack_assert(hci_stack->hci_packet_buffer_reserved); 977 978 uint8_t * packet = hci_stack->hci_packet_buffer; 979 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 980 981 hci_connection_t *connection = hci_connection_for_handle( con_handle); 982 if (!connection) { 983 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 984 hci_release_packet_buffer(); 985 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 986 } 987 988 // check for free places on Bluetooth module 989 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 990 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 991 hci_release_packet_buffer(); 992 return BTSTACK_ACL_BUFFERS_FULL; 993 } 994 995 #ifdef ENABLE_CLASSIC 996 hci_connection_timestamp(connection); 997 #endif 998 999 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 1000 1001 // setup data 1002 hci_stack->acl_fragmentation_total_size = size; 1003 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 1004 1005 return hci_send_acl_packet_fragments(connection); 1006 } 1007 1008 #ifdef ENABLE_CLASSIC 1009 // pre: caller has reserved the packet buffer 1010 uint8_t hci_send_sco_packet_buffer(int size){ 1011 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1012 1013 uint8_t * packet = hci_stack->hci_packet_buffer; 1014 1015 // skip checks in loopback mode 1016 if (!hci_stack->loopback_mode){ 1017 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 1018 1019 // check for free places on Bluetooth module 1020 if (!hci_can_send_prepared_sco_packet_now()) { 1021 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 1022 hci_release_packet_buffer(); 1023 return BTSTACK_ACL_BUFFERS_FULL; 1024 } 1025 1026 // track send packet in connection struct 1027 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1028 if (!connection) { 1029 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1030 hci_release_packet_buffer(); 1031 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1032 } 1033 1034 if (hci_have_usb_transport()){ 1035 // token used 1036 hci_stack->sco_can_send_now = false; 1037 } else { 1038 if (hci_stack->synchronous_flow_control_enabled){ 1039 connection->num_packets_sent++; 1040 } else { 1041 connection->sco_tx_ready--; 1042 } 1043 } 1044 } 1045 1046 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1047 1048 #ifdef HAVE_SCO_TRANSPORT 1049 hci_stack->sco_transport->send_packet(packet, size); 1050 hci_release_packet_buffer(); 1051 hci_emit_transport_packet_sent(); 1052 1053 return 0; 1054 #else 1055 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1056 uint8_t status; 1057 if (err == 0){ 1058 status = ERROR_CODE_SUCCESS; 1059 } else { 1060 status = ERROR_CODE_HARDWARE_FAILURE; 1061 } 1062 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 1063 hci_release_packet_buffer(); 1064 } 1065 return status; 1066 #endif 1067 } 1068 #endif 1069 1070 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1071 static uint8_t hci_send_iso_packet_fragments(void){ 1072 1073 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1074 uint8_t status = ERROR_CODE_SUCCESS; 1075 // multiple packets could be send on a synchronous HCI transport 1076 while (true){ 1077 1078 // get current data 1079 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1080 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1081 bool more_fragments = false; 1082 1083 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1084 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1085 more_fragments = true; 1086 current_iso_data_packet_length = max_iso_data_packet_length; 1087 } 1088 1089 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1090 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1091 uint8_t pb_flags; 1092 if (iso_header_pos == 0u){ 1093 // first fragment, keep TS field 1094 pb_flags = more_fragments ? 0x00 : 0x02; 1095 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1096 } else { 1097 // later fragment, drop TS field 1098 pb_flags = more_fragments ? 0x01 : 0x03; 1099 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1100 } 1101 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1102 1103 // update header len 1104 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1105 1106 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1107 if (more_fragments){ 1108 // update start of next fragment to send 1109 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1110 } else { 1111 // done 1112 hci_stack->iso_fragmentation_pos = 0; 1113 hci_stack->iso_fragmentation_total_size = 0; 1114 } 1115 1116 // send packet 1117 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1118 const int size = current_iso_data_packet_length + 4; 1119 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1120 hci_stack->iso_fragmentation_tx_active = true; 1121 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1122 if (err != 0){ 1123 // no error from HCI Transport expected 1124 status = ERROR_CODE_HARDWARE_FAILURE; 1125 } 1126 1127 // done yet? 1128 if (!more_fragments) break; 1129 1130 // can send more? 1131 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1132 } 1133 1134 // release buffer now for synchronous transport 1135 if (hci_transport_synchronous()){ 1136 hci_stack->iso_fragmentation_tx_active = false; 1137 hci_release_packet_buffer(); 1138 hci_emit_transport_packet_sent(); 1139 } 1140 1141 return status; 1142 } 1143 1144 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1145 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1146 1147 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1148 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1149 if (iso_stream == NULL){ 1150 hci_release_packet_buffer(); 1151 hci_iso_notify_can_send_now(); 1152 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1153 } 1154 1155 // TODO: check for space on controller 1156 1157 // skip iso packets if needed 1158 if (iso_stream->num_packets_to_skip > 0){ 1159 iso_stream->num_packets_to_skip--; 1160 // pretend it was processed and trigger next one 1161 hci_release_packet_buffer(); 1162 hci_iso_notify_can_send_now(); 1163 return ERROR_CODE_SUCCESS; 1164 } 1165 1166 // track outgoing packet sent 1167 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1168 iso_stream->num_packets_sent++; 1169 1170 // setup data 1171 hci_stack->iso_fragmentation_total_size = size; 1172 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1173 1174 return hci_send_iso_packet_fragments(); 1175 } 1176 #endif 1177 1178 static void acl_handler(uint8_t *packet, uint16_t size){ 1179 1180 // get info 1181 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1182 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1183 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1184 uint16_t acl_length = READ_ACL_LENGTH(packet); 1185 1186 // ignore non-registered handle 1187 if (!conn){ 1188 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1189 return; 1190 } 1191 1192 // assert packet is complete 1193 if ((acl_length + 4u) != size){ 1194 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1195 return; 1196 } 1197 1198 #ifdef ENABLE_CLASSIC 1199 // update idle timestamp 1200 hci_connection_timestamp(conn); 1201 #endif 1202 1203 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1204 hci_stack->host_completed_packets = 1; 1205 conn->num_packets_completed++; 1206 #endif 1207 1208 // handle different packet types 1209 switch (acl_flags & 0x03u) { 1210 1211 case 0x01: // continuation fragment 1212 1213 // sanity checks 1214 if (conn->acl_recombination_pos == 0u) { 1215 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1216 return; 1217 } 1218 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1219 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1220 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1221 conn->acl_recombination_pos = 0; 1222 return; 1223 } 1224 1225 // append fragment payload (header already stored) 1226 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1227 &packet[4], acl_length); 1228 conn->acl_recombination_pos += acl_length; 1229 1230 // forward complete L2CAP packet if complete. 1231 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1232 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1233 // reset recombination buffer 1234 conn->acl_recombination_length = 0; 1235 conn->acl_recombination_pos = 0; 1236 } 1237 break; 1238 1239 case 0x02: { // first fragment 1240 1241 // sanity check 1242 if (conn->acl_recombination_pos) { 1243 // we just received the first fragment, but still have data. Only warn if the packet wasn't a flushable packet 1244 if ((conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE+1] >> 4) != 0x02){ 1245 log_error( "ACL First Fragment but %u bytes in buffer for handle 0x%02x, dropping stale fragments", conn->acl_recombination_pos, con_handle); 1246 } 1247 conn->acl_recombination_pos = 0; 1248 } 1249 1250 // peek into L2CAP packet! 1251 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1252 1253 // compare fragment size to L2CAP packet size 1254 if (acl_length >= (l2cap_length + 4u)){ 1255 // forward fragment as L2CAP packet 1256 hci_emit_acl_packet(packet, acl_length + 4u); 1257 } else { 1258 1259 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1260 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1261 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1262 return; 1263 } 1264 1265 // store first fragment and tweak acl length for complete package 1266 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1267 packet, acl_length + 4u); 1268 conn->acl_recombination_pos = acl_length + 4u; 1269 conn->acl_recombination_length = l2cap_length; 1270 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1271 } 1272 break; 1273 1274 } 1275 default: 1276 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1277 return; 1278 } 1279 1280 // execute main loop 1281 hci_run(); 1282 } 1283 1284 static void hci_connection_stop_timer(hci_connection_t * conn){ 1285 btstack_run_loop_remove_timer(&conn->timeout); 1286 #ifdef ENABLE_CLASSIC 1287 btstack_run_loop_remove_timer(&conn->timeout_sco); 1288 #endif 1289 } 1290 1291 static void hci_shutdown_connection(hci_connection_t *conn){ 1292 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1293 1294 #ifdef ENABLE_CLASSIC 1295 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1296 bd_addr_type_t addr_type = conn->address_type; 1297 #endif 1298 #ifdef HAVE_SCO_TRANSPORT 1299 hci_con_handle_t con_handle = conn->con_handle; 1300 #endif 1301 #endif 1302 1303 hci_connection_stop_timer(conn); 1304 1305 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1306 btstack_memory_hci_connection_free( conn ); 1307 1308 // now it's gone 1309 hci_emit_nr_connections_changed(); 1310 1311 #ifdef ENABLE_CLASSIC 1312 #ifdef ENABLE_SCO_OVER_HCI 1313 // update SCO 1314 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1315 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1316 } 1317 #endif 1318 #ifdef HAVE_SCO_TRANSPORT 1319 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1320 hci_stack->sco_transport->close(con_handle); 1321 } 1322 #endif 1323 #endif 1324 } 1325 1326 #ifdef ENABLE_CLASSIC 1327 1328 static const uint16_t hci_acl_packet_type_sizes[] = { 1329 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1330 HCI_ACL_DH1_SIZE, 0, 0, 0, 1331 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1332 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1333 }; 1334 static const uint8_t hci_acl_packet_type_feature_requirement_bit[] = { 1335 0, // 3 slot packets 1336 1, // 5 slot packets 1337 25, // EDR 2 mpbs 1338 26, // EDR 3 mbps 1339 39, // 3 slot EDR packts 1340 40, // 5 slot EDR packet 1341 }; 1342 static const uint16_t hci_acl_packet_type_feature_packet_mask[] = { 1343 0x0f00, // 3 slot packets 1344 0xf000, // 5 slot packets 1345 0x1102, // EDR 2 mpbs 1346 0x2204, // EDR 3 mbps 1347 0x0300, // 3 slot EDR packts 1348 0x3000, // 5 slot EDR packet 1349 }; 1350 1351 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1352 // enable packet types based on size 1353 uint16_t packet_types = 0; 1354 unsigned int i; 1355 for (i=0;i<16;i++){ 1356 if (hci_acl_packet_type_sizes[i] == 0) continue; 1357 if (hci_acl_packet_type_sizes[i] <= buffer_size){ 1358 packet_types |= 1 << i; 1359 } 1360 } 1361 // disable packet types due to missing local supported features 1362 for (i=0;i<sizeof(hci_acl_packet_type_feature_requirement_bit); i++){ 1363 unsigned int bit_idx = hci_acl_packet_type_feature_requirement_bit[i]; 1364 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1365 if (feature_set) continue; 1366 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_acl_packet_type_feature_packet_mask[i]); 1367 packet_types &= ~hci_acl_packet_type_feature_packet_mask[i]; 1368 } 1369 return packet_types; 1370 } 1371 1372 uint16_t hci_usable_acl_packet_types(void){ 1373 uint16_t active_packet_types = (hci_stack->usable_packet_types_acl & hci_stack->enabled_packet_types_acl); 1374 // flip bits for "may not be used" 1375 return active_packet_types ^ 0x3306; 1376 } 1377 1378 void hci_enable_acl_packet_types(uint16_t packet_types){ 1379 hci_stack->enabled_packet_types_acl = packet_types; 1380 } 1381 1382 static const struct { 1383 uint8_t feature_index; 1384 uint16_t feature_packet_mask; 1385 } hci_sco_packet_type_feature_requirements[] = { 1386 { 12, SCO_PACKET_TYPES_HV2 }, // HV2 packets 1387 { 13, SCO_PACKET_TYPES_HV3 }, // HV3 packets 1388 { 31, SCO_PACKET_TYPES_ESCO }, // eSCO links (EV3 packets) 1389 { 32, SCO_PACKET_TYPES_EV4 }, // EV4 packets 1390 { 45, SCO_PACKET_TYPES_2EV3 | SCO_PACKET_TYPES_2EV5 }, // EDR eSCO 2 Mb/s 1391 { 46, SCO_PACKET_TYPES_3EV3 | SCO_PACKET_TYPES_3EV5 }, // EDR eSCO 3 Mb/s 1392 { 47, SCO_PACKET_TYPES_2EV5 | SCO_PACKET_TYPES_3EV5 }, // 3-slot EDR eSCO packets, 2-EV3/3-EV3 use single slot 1393 }; 1394 1395 // map packet types to payload length, prefer eSCO over SCO and large over small packets 1396 static const struct { 1397 uint16_t type; 1398 uint16_t payload_length; 1399 } hci_sco_packet_type_to_payload_length[] = { 1400 {SCO_PACKET_TYPES_3EV5, HCI_SCO_3EV5_SIZE}, // 540 1401 {SCO_PACKET_TYPES_2EV5, HCI_SCO_2EV5_SIZE}, // 360 1402 {SCO_PACKET_TYPES_EV5, HCI_SCO_EV5_SIZE}, // 180 1403 {SCO_PACKET_TYPES_EV4, HCI_SCO_EV4_SIZE}, // 120 1404 {SCO_PACKET_TYPES_3EV3, HCI_SCO_3EV3_SIZE}, // 90 1405 {SCO_PACKET_TYPES_2EV3, HCI_SCO_2EV3_SIZE}, // 60 1406 {SCO_PACKET_TYPES_EV3, HCI_SCO_EV3_SIZE}, // 30 1407 {SCO_PACKET_TYPES_HV3, HCI_SCO_HV3_SIZE}, // 30 1408 {SCO_PACKET_TYPES_HV2, HCI_SCO_HV2_SIZE}, // 20 1409 {SCO_PACKET_TYPES_HV1, HCI_SCO_HV1_SIZE} // 10 1410 }; 1411 1412 static uint16_t hci_sco_packet_types_for_features(const uint8_t * local_supported_features){ 1413 uint16_t packet_types = SCO_PACKET_TYPES_ALL; 1414 unsigned int i; 1415 // disable packet types due to missing local supported features 1416 for (i=0;i<(sizeof(hci_sco_packet_type_feature_requirements)/sizeof(hci_sco_packet_type_feature_requirements[0])); i++){ 1417 unsigned int bit_idx = hci_sco_packet_type_feature_requirements[i].feature_index; 1418 bool feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1419 if (feature_set) continue; 1420 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, hci_sco_packet_type_feature_requirements[i].feature_packet_mask); 1421 packet_types &= ~hci_sco_packet_type_feature_requirements[i].feature_packet_mask; 1422 } 1423 return packet_types; 1424 } 1425 1426 uint16_t hci_usable_sco_packet_types(void){ 1427 return hci_stack->usable_packet_types_sco; 1428 } 1429 1430 static uint16_t hci_sco_payload_length_for_packet_types(uint16_t packet_types){ 1431 uint8_t i; 1432 for (i=0;i<sizeof(hci_sco_packet_type_to_payload_length)/sizeof(hci_sco_packet_type_to_payload_length[0]);i++){ 1433 if ((hci_sco_packet_type_to_payload_length[i].type & packet_types) != 0){ 1434 return hci_sco_packet_type_to_payload_length[i].payload_length; 1435 } 1436 } 1437 return 0; 1438 } 1439 1440 #endif 1441 1442 uint8_t* hci_get_outgoing_packet_buffer(void){ 1443 // hci packet buffer is >= acl data packet length 1444 return hci_stack->hci_packet_buffer; 1445 } 1446 1447 uint16_t hci_max_acl_data_packet_length(void){ 1448 return hci_stack->acl_data_packet_length; 1449 } 1450 1451 #ifdef ENABLE_CLASSIC 1452 bool hci_extended_sco_link_supported(void){ 1453 // No. 31, byte 3, bit 7 1454 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1455 } 1456 #endif 1457 1458 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1459 // No. 54, byte 6, bit 6 1460 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1461 } 1462 1463 #ifdef ENABLE_CLASSIC 1464 static bool gap_ssp_supported(void){ 1465 // No. 51, byte 6, bit 3 1466 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1467 } 1468 #endif 1469 1470 bool hci_classic_supported(void){ 1471 #ifdef ENABLE_CLASSIC 1472 // No. 37, byte 4, bit 5, = No BR/EDR Support 1473 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1474 #else 1475 return false; 1476 #endif 1477 } 1478 1479 bool hci_le_supported(void){ 1480 #ifdef ENABLE_BLE 1481 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1482 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1483 #else 1484 return false; 1485 #endif 1486 } 1487 1488 static bool hci_command_supported(uint8_t command_index){ 1489 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1490 } 1491 1492 #ifdef ENABLE_BLE 1493 1494 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1495 bool hci_le_extended_advertising_supported(void){ 1496 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1497 } 1498 #endif 1499 1500 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1501 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1502 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1503 } else { 1504 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1505 } 1506 } 1507 1508 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1509 *addr_type = hci_stack->le_own_addr_type; 1510 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1511 } 1512 1513 #ifdef ENABLE_LE_PERIPHERAL 1514 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1515 *addr_type = hci_stack->le_advertisements_own_addr_type; 1516 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1517 }; 1518 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1519 void gap_le_get_own_advertising_set_address(uint8_t * addr_type, bd_addr_t addr, uint8_t advertising_handle){ 1520 if (advertising_handle == 0){ 1521 gap_le_get_own_advertisements_address(addr_type, addr); 1522 } else { 1523 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 1524 if (advertising_set != NULL){ 1525 switch (advertising_set->extended_params.own_address_type){ 1526 case BD_ADDR_TYPE_LE_PUBLIC: 1527 *addr_type = BD_ADDR_TYPE_LE_PUBLIC; 1528 memcpy(addr, hci_stack->local_bd_addr, 6); 1529 break; 1530 case BD_ADDR_TYPE_LE_RANDOM: 1531 *addr_type = BD_ADDR_TYPE_LE_RANDOM; 1532 memcpy(addr, advertising_set->random_address, 6); 1533 break; 1534 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 1535 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 1536 // do nothing as random address was already set from enhanced connection complete 1537 break; 1538 default: 1539 break; 1540 } 1541 } 1542 } 1543 }; 1544 #endif 1545 #endif 1546 1547 #ifdef ENABLE_LE_CENTRAL 1548 1549 /** 1550 * @brief Get own addr type and address used for LE connections (Central) 1551 */ 1552 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1553 *addr_type = hci_stack->le_connection_own_addr_type; 1554 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1555 } 1556 1557 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1558 1559 uint16_t offset = 3; 1560 uint8_t num_reports = packet[offset]; 1561 offset += 1; 1562 1563 uint16_t i; 1564 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1565 for (i=0; (i<num_reports) && (offset < size);i++){ 1566 // sanity checks on data_length: 1567 uint8_t data_length = packet[offset + 8]; 1568 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1569 if ((offset + 9u + data_length + 1u) > size) return; 1570 // setup event 1571 uint8_t event_size = 10u + data_length; 1572 uint16_t pos = 0; 1573 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1574 event[pos++] = event_size; 1575 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1576 offset += 8; 1577 pos += 8; 1578 event[pos++] = packet[offset + 1 + data_length]; // rssi 1579 event[pos++] = data_length; 1580 offset++; 1581 (void)memcpy(&event[pos], &packet[offset], data_length); 1582 pos += data_length; 1583 offset += data_length + 1u; // rssi 1584 hci_emit_btstack_event(event, pos, 1); 1585 } 1586 } 1587 1588 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1589 static void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1590 uint16_t offset = 3; 1591 uint8_t num_reports = packet[offset++]; 1592 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1593 uint8_t i; 1594 for (i=0; (i<num_reports) && (offset < size);i++){ 1595 // sanity checks on data_length: 1596 uint16_t data_length = packet[offset + 23]; 1597 if (data_length > LE_EXTENDED_ADVERTISING_DATA_SIZE) return; 1598 if ((offset + 24u + data_length) > size) return; 1599 uint16_t event_type = little_endian_read_16(packet, offset); 1600 offset += 2; 1601 if ((event_type & 0x10) != 0) { 1602 // setup legacy event 1603 uint8_t legacy_event_type; 1604 switch (event_type){ 1605 case 0b0010011: 1606 // ADV_IND 1607 legacy_event_type = 0; 1608 break; 1609 case 0b0010101: 1610 // ADV_DIRECT_IND 1611 legacy_event_type = 1; 1612 break; 1613 case 0b0010010: 1614 // ADV_SCAN_IND 1615 legacy_event_type = 2; 1616 break; 1617 case 0b0010000: 1618 // ADV_NONCONN_IND 1619 legacy_event_type = 3; 1620 break; 1621 case 0b0011011: 1622 case 0b0011010: 1623 // SCAN_RSP 1624 legacy_event_type = 4; 1625 break; 1626 default: 1627 legacy_event_type = 0; 1628 break; 1629 } 1630 uint16_t pos = 0; 1631 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1632 event[pos++] = 10u + data_length; 1633 event[pos++] = legacy_event_type; 1634 // copy address type + address 1635 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1636 offset += 7; 1637 pos += 7; 1638 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1639 offset += 4; 1640 // copy rssi 1641 event[pos++] = packet[offset++]; 1642 // skip periodic advertising interval and direct address 1643 offset += 9; 1644 // copy data len + data; 1645 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1646 pos += 1 +data_length; 1647 offset += 1+ data_length; 1648 hci_emit_btstack_event(event, pos, 1); 1649 } else { 1650 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1651 uint8_t report_len = 24 + data_length; 1652 event[1] = report_len; 1653 little_endian_store_16(event, 2, event_type); 1654 memcpy(&event[4], &packet[offset], report_len); 1655 offset += report_len; 1656 hci_emit_btstack_event(event, 2 + report_len, 1); 1657 } 1658 } 1659 } 1660 #endif 1661 1662 #endif 1663 #endif 1664 1665 #ifdef ENABLE_BLE 1666 #ifdef ENABLE_LE_PERIPHERAL 1667 static void hci_update_advertisements_enabled_for_current_roles(void){ 1668 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1669 // get number of active le slave connections 1670 int num_slave_connections = 0; 1671 btstack_linked_list_iterator_t it; 1672 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1673 while (btstack_linked_list_iterator_has_next(&it)){ 1674 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1675 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1676 if (con->state != OPEN) continue; 1677 if (con->role != HCI_ROLE_SLAVE) continue; 1678 if (!hci_is_le_connection(con)) continue; 1679 num_slave_connections++; 1680 } 1681 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1682 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1683 } else { 1684 hci_stack->le_advertisements_enabled_for_current_roles = false; 1685 } 1686 } 1687 #endif 1688 #endif 1689 1690 #ifdef ENABLE_CLASSIC 1691 static void gap_run_set_local_name(void){ 1692 hci_reserve_packet_buffer(); 1693 uint8_t * packet = hci_stack->hci_packet_buffer; 1694 // construct HCI Command and send 1695 uint16_t opcode = hci_write_local_name.opcode; 1696 packet[0] = opcode & 0xff; 1697 packet[1] = opcode >> 8; 1698 packet[2] = DEVICE_NAME_LEN; 1699 memset(&packet[3], 0, DEVICE_NAME_LEN); 1700 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1701 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1702 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1703 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1704 // expand '00:00:00:00:00:00' in name with bd_addr 1705 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1706 hci_send_prepared_cmd_packet(); 1707 } 1708 1709 static void gap_run_set_eir_data(void){ 1710 hci_reserve_packet_buffer(); 1711 uint8_t * packet = hci_stack->hci_packet_buffer; 1712 // construct HCI Command in-place and send 1713 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1714 uint16_t offset = 0; 1715 packet[offset++] = opcode & 0xff; 1716 packet[offset++] = opcode >> 8; 1717 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1718 packet[offset++] = 0; // FEC not required 1719 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1720 if (hci_stack->eir_data){ 1721 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1722 ad_context_t context; 1723 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1724 uint8_t data_type = ad_iterator_get_data_type(&context); 1725 uint8_t size = ad_iterator_get_data_len(&context); 1726 const uint8_t *data = ad_iterator_get_data(&context); 1727 // copy item 1728 packet[offset++] = size + 1; 1729 packet[offset++] = data_type; 1730 memcpy(&packet[offset], data, size); 1731 // update name item 1732 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1733 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1734 } 1735 offset += size; 1736 } 1737 } else { 1738 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1739 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1740 packet[offset++] = bytes_to_copy + 1; 1741 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1742 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1743 // expand '00:00:00:00:00:00' in name with bd_addr 1744 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1745 } 1746 hci_send_prepared_cmd_packet(); 1747 } 1748 1749 static void hci_run_gap_tasks_classic(void){ 1750 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1751 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1752 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1753 return; 1754 } 1755 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1756 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1757 gap_run_set_local_name(); 1758 return; 1759 } 1760 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1761 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1762 gap_run_set_eir_data(); 1763 return; 1764 } 1765 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1766 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1767 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1768 return; 1769 } 1770 // write page scan activity 1771 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1772 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1773 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1774 return; 1775 } 1776 // write page scan type 1777 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1778 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1779 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1780 return; 1781 } 1782 // write page timeout 1783 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1784 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1785 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1786 return; 1787 } 1788 // send scan enable 1789 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1790 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1791 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1792 return; 1793 } 1794 // send write scan activity 1795 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1796 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1797 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1798 return; 1799 } 1800 // send write inquiry transmit power level 1801 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL) != 0) { 1802 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 1803 hci_send_cmd(&hci_write_inquiry_transmit_power_level, hci_stack->inquiry_tx_power_level); 1804 return; 1805 } 1806 } 1807 #endif 1808 1809 #ifndef HAVE_HOST_CONTROLLER_API 1810 1811 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1812 if (!hci_stack->config) return 0; 1813 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1814 // Limit baud rate for Broadcom chipsets to 3 mbps 1815 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1816 baud_rate = 3000000; 1817 } 1818 return baud_rate; 1819 } 1820 1821 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1822 UNUSED(ds); 1823 1824 switch (hci_stack->substate){ 1825 case HCI_INIT_W4_SEND_RESET: 1826 log_info("Resend HCI Reset"); 1827 hci_stack->substate = HCI_INIT_SEND_RESET; 1828 hci_stack->num_cmd_packets = 1; 1829 hci_run(); 1830 break; 1831 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1832 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1833 if (hci_stack->hci_transport->reset_link){ 1834 hci_stack->hci_transport->reset_link(); 1835 } 1836 1837 /* fall through */ 1838 1839 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1840 log_info("Resend HCI Reset - CSR Warm Boot"); 1841 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1842 hci_stack->num_cmd_packets = 1; 1843 hci_run(); 1844 break; 1845 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1846 if (hci_stack->hci_transport->set_baudrate){ 1847 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1848 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1849 hci_stack->hci_transport->set_baudrate(baud_rate); 1850 } 1851 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1852 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1853 if (hci_stack->hci_transport->reset_link){ 1854 log_info("Link Reset"); 1855 hci_stack->hci_transport->reset_link(); 1856 } 1857 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1858 hci_run(); 1859 } 1860 break; 1861 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1862 // otherwise continue 1863 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1864 hci_send_cmd(&hci_read_local_supported_commands); 1865 break; 1866 default: 1867 break; 1868 } 1869 } 1870 #endif 1871 1872 static void hci_initializing_next_state(void){ 1873 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1874 } 1875 1876 static void hci_init_done(void){ 1877 // done. tell the app 1878 log_info("hci_init_done -> HCI_STATE_WORKING"); 1879 hci_stack->state = HCI_STATE_WORKING; 1880 hci_emit_state(); 1881 } 1882 1883 // assumption: hci_can_send_command_packet_now() == true 1884 static void hci_initializing_run(void){ 1885 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1886 1887 if (!hci_can_send_command_packet_now()) return; 1888 1889 #ifndef HAVE_HOST_CONTROLLER_API 1890 bool need_baud_change = hci_stack->config 1891 && hci_stack->chipset 1892 && hci_stack->chipset->set_baudrate_command 1893 && hci_stack->hci_transport->set_baudrate 1894 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1895 #endif 1896 1897 switch (hci_stack->substate){ 1898 case HCI_INIT_SEND_RESET: 1899 hci_state_reset(); 1900 1901 #ifndef HAVE_HOST_CONTROLLER_API 1902 // prepare reset if command complete not received in 100ms 1903 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1904 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1905 btstack_run_loop_add_timer(&hci_stack->timeout); 1906 #endif 1907 // send command 1908 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1909 hci_send_cmd(&hci_reset); 1910 break; 1911 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1912 hci_send_cmd(&hci_read_local_version_information); 1913 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1914 break; 1915 1916 #ifndef HAVE_HOST_CONTROLLER_API 1917 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1918 hci_state_reset(); 1919 // prepare reset if command complete not received in 100ms 1920 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1921 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1922 btstack_run_loop_add_timer(&hci_stack->timeout); 1923 // send command 1924 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1925 hci_send_cmd(&hci_reset); 1926 break; 1927 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1928 hci_state_reset(); 1929 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1930 hci_send_cmd(&hci_reset); 1931 break; 1932 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1933 hci_reserve_packet_buffer(); 1934 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1935 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1936 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1937 hci_send_prepared_cmd_packet(); 1938 break; 1939 } 1940 case HCI_INIT_SET_BD_ADDR: 1941 hci_reserve_packet_buffer(); 1942 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1943 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1944 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1945 hci_send_prepared_cmd_packet(); 1946 break; 1947 case HCI_INIT_SEND_READ_LOCAL_NAME: 1948 #ifdef ENABLE_CLASSIC 1949 hci_send_cmd(&hci_read_local_name); 1950 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1951 break; 1952 #endif 1953 /* fall through */ 1954 1955 case HCI_INIT_SEND_BAUD_CHANGE: 1956 if (need_baud_change) { 1957 hci_reserve_packet_buffer(); 1958 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1959 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1960 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1961 hci_send_prepared_cmd_packet(); 1962 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1963 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1964 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1965 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1966 btstack_run_loop_add_timer(&hci_stack->timeout); 1967 } 1968 break; 1969 } 1970 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1971 1972 /* fall through */ 1973 1974 case HCI_INIT_CUSTOM_INIT: 1975 case HCI_INIT_CUSTOM_PRE_INIT: 1976 // Custom initialization 1977 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1978 hci_reserve_packet_buffer(); 1979 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1980 bool send_cmd = false; 1981 switch (hci_stack->chipset_result){ 1982 case BTSTACK_CHIPSET_VALID_COMMAND: 1983 send_cmd = true; 1984 switch (hci_stack->substate){ 1985 case HCI_INIT_CUSTOM_INIT: 1986 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1987 break; 1988 case HCI_INIT_CUSTOM_PRE_INIT: 1989 hci_stack->substate = HCI_INIT_W4_CUSTOM_PRE_INIT; 1990 break; 1991 default: 1992 btstack_assert(false); 1993 break; 1994 } 1995 break; 1996 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1997 send_cmd = true; 1998 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1999 log_info("CSR Warm Boot"); 2000 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 2001 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2002 btstack_run_loop_add_timer(&hci_stack->timeout); 2003 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 2004 && hci_stack->config 2005 && hci_stack->chipset 2006 // && hci_stack->chipset->set_baudrate_command -- there's no such command 2007 && hci_stack->hci_transport->set_baudrate 2008 && hci_transport_uart_get_main_baud_rate()){ 2009 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 2010 } else { 2011 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 2012 } 2013 break; 2014 default: 2015 break; 2016 } 2017 2018 if (send_cmd){ 2019 hci_send_prepared_cmd_packet(); 2020 break; 2021 } else { 2022 hci_release_packet_buffer(); 2023 } 2024 log_info("Init script done"); 2025 2026 // Custom Pre-Init complete, start regular init with HCI Reset 2027 if (hci_stack->substate == HCI_INIT_CUSTOM_PRE_INIT){ 2028 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2029 hci_send_cmd(&hci_reset); 2030 break; 2031 } 2032 2033 // Init script download on Broadcom chipsets causes: 2034 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2035 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 2036 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 2037 2038 // - baud rate to reset, restore UART baud rate if needed 2039 if (need_baud_change) { 2040 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 2041 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 2042 hci_stack->hci_transport->set_baudrate(baud_rate); 2043 } 2044 2045 uint16_t bcm_delay_ms = 300; 2046 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 2047 // -> Work around: wait here. 2048 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 2049 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 2050 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 2051 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 2052 btstack_run_loop_add_timer(&hci_stack->timeout); 2053 break; 2054 } 2055 } 2056 #endif 2057 /* fall through */ 2058 2059 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 2060 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 2061 hci_send_cmd(&hci_read_local_supported_commands); 2062 break; 2063 case HCI_INIT_READ_BD_ADDR: 2064 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 2065 hci_send_cmd(&hci_read_bd_addr); 2066 break; 2067 case HCI_INIT_READ_BUFFER_SIZE: 2068 // only read buffer size if supported 2069 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 2070 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 2071 hci_send_cmd(&hci_read_buffer_size); 2072 break; 2073 } 2074 2075 /* fall through */ 2076 2077 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 2078 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 2079 hci_send_cmd(&hci_read_local_supported_features); 2080 break; 2081 2082 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2083 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 2084 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 2085 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 2086 break; 2087 case HCI_INIT_HOST_BUFFER_SIZE: 2088 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 2089 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 2090 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 2091 break; 2092 #endif 2093 2094 case HCI_INIT_SET_EVENT_MASK: 2095 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 2096 if (hci_le_supported()){ 2097 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 2098 } else { 2099 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 2100 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 2101 } 2102 break; 2103 2104 case HCI_INIT_SET_EVENT_MASK_2: 2105 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 2106 // setting Event Mask 2 causes Controller to drop Encryption Change events. 2107 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 2108 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 2109 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 2110 // Encryption Change Event v2 - bit 25 2111 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 2112 break; 2113 } 2114 2115 #ifdef ENABLE_CLASSIC 2116 /* fall through */ 2117 2118 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 2119 if (hci_classic_supported() && gap_ssp_supported()){ 2120 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 2121 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 2122 break; 2123 } 2124 2125 /* fall through */ 2126 2127 case HCI_INIT_WRITE_INQUIRY_MODE: 2128 if (hci_classic_supported()){ 2129 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 2130 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 2131 break; 2132 } 2133 2134 /* fall through */ 2135 2136 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 2137 // skip write secure connections host support if not supported or disabled 2138 if (hci_classic_supported() && hci_stack->secure_connections_enable 2139 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 2140 hci_stack->secure_connections_active = true; 2141 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 2142 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2143 break; 2144 } 2145 2146 /* fall through */ 2147 2148 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2149 // skip set min encryption key size 2150 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2151 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2152 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2153 break; 2154 } 2155 2156 #ifdef ENABLE_SCO_OVER_HCI 2157 /* fall through */ 2158 2159 // only sent if ENABLE_SCO_OVER_HCI is defined 2160 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2161 // skip write synchronous flow control if not supported 2162 if (hci_classic_supported() 2163 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2164 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2165 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2166 break; 2167 } 2168 /* fall through */ 2169 2170 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2171 // skip write default erroneous data reporting if not supported 2172 if (hci_classic_supported() 2173 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2174 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2175 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2176 break; 2177 } 2178 #endif 2179 2180 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2181 /* fall through */ 2182 2183 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2184 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2185 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2186 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2187 #ifdef ENABLE_SCO_OVER_HCI 2188 log_info("BCM: Route SCO data via HCI transport"); 2189 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2190 #endif 2191 #ifdef ENABLE_SCO_OVER_PCM 2192 log_info("BCM: Route SCO data via PCM interface"); 2193 #ifdef ENABLE_BCM_PCM_WBS 2194 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2195 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2196 #else 2197 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2198 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2199 #endif 2200 #endif 2201 break; 2202 } 2203 #endif 2204 2205 #ifdef ENABLE_SCO_OVER_PCM 2206 /* fall through */ 2207 2208 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2209 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2210 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2211 log_info("BCM: Config PCM interface for I2S"); 2212 #ifdef ENABLE_BCM_PCM_WBS 2213 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2214 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2215 #else 2216 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2217 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2218 #endif 2219 break; 2220 } 2221 case HCI_INIT_BCM_WRITE_PCM_DATA_FORMAT_PARAM: 2222 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2223 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_PCM_DATA_FORMAT_PARAM; 2224 log_info("BCM: Config PCM Data format"); 2225 // msb first, fill bits 0, left justified 2226 hci_send_cmd(&hci_bcm_write_pcm_data_format_param, 0, 0, 3, 3, 0); 2227 break; 2228 } 2229 #ifdef HAVE_BCM_PCM2 2230 case HCI_INIT_BCM_PCM2_SETUP: 2231 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)) { 2232 hci_stack->substate = HCI_INIT_W4_BCM_PCM2_SETUP; 2233 uint8_t op_mode = 0; // Op_Mode = 0 = PCM, 1 = I2S 2234 uint32_t pcm_clock_freq; 2235 uint8_t ch_0_period; 2236 #ifdef ENABLE_BCM_PCM_WBS 2237 // 512 kHz, resample 8 kHz to 16 khz 2238 pcm_clock_freq = 512000; 2239 ch_0_period = 1; 2240 #else 2241 // 256 khz, 8 khz output 2242 pcm_clock_freq = 256000; 2243 ch_0_period = 0; 2244 #endif 2245 log_info("BCM: Config PCM2 - op mode %u, pcm clock %" PRIu32 ", ch0_period %u", op_mode, pcm_clock_freq, ch_0_period); 2246 hci_send_cmd(&hci_bcm_pcm2_setup, 2247 0x00, // Action = Write 2248 0x00, // Test_Options = None 2249 op_mode, // Op_Mode 2250 0x1D, // Sync_and_Clock_Options Sync = Signal | Sync Output Enable | Generate PCM_CLK | Tristate When Idle 2251 pcm_clock_freq, // PCM_Clock_Freq 2252 0x01, // Sync_Signal_Width 2253 0x0F, // Slot_Width 2254 0x01, // NumberOfSlots 2255 0x00, // Bank_0_Fill_Mode = 0s 2256 0x00, // Bank_0_Number_of_Fill_Bits 2257 0x00, // Bank_0_Programmable_Fill_Data 2258 0x00, // Bank_1_Fill_Mode = 0s 2259 0x00, // Bank_1_Number_of_Fill_Bits 2260 0x00, // Bank_1_Programmable_Fill_Data 2261 0x00, // Data_Justify_And_Bit_Order_Options = Left Justify 2262 0x00, // Ch_0_Slot_Number 2263 0x01, // Ch_1_Slot_Number 2264 0x02, // Ch_2_Slot_Number 2265 0x03, // Ch_3_Slot_Number 2266 0x04, // Ch_4_Slot_Number 2267 ch_0_period, // Ch_0_Period 2268 0x00, // Ch_1_Period 2269 0x00 // Ch_2_Period 2270 ); 2271 break; 2272 } 2273 #endif 2274 #endif /* ENABLE_SCO_OVER_PCM */ 2275 #endif /* ENABLE_CLASSIC */ 2276 2277 #ifdef ENABLE_BLE 2278 /* fall through */ 2279 2280 // LE INIT 2281 case HCI_INIT_LE_READ_BUFFER_SIZE: 2282 if (hci_le_supported()){ 2283 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2284 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2285 hci_send_cmd(&hci_le_read_buffer_size_v2); 2286 } else { 2287 hci_send_cmd(&hci_le_read_buffer_size); 2288 } 2289 break; 2290 } 2291 2292 /* fall through */ 2293 2294 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2295 // skip write le host if not supported (e.g. on LE only EM9301) 2296 if (hci_le_supported() 2297 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2298 // LE Supported Host = 1, Simultaneous Host = 0 2299 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2300 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2301 break; 2302 } 2303 2304 /* fall through */ 2305 2306 case HCI_INIT_LE_SET_EVENT_MASK: 2307 if (hci_le_supported()){ 2308 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2309 #ifdef ENABLE_LE_ENHANCED_CONNECTION_COMPLETE_EVENT 2310 hci_send_cmd(&hci_le_set_event_mask, 0xffffffff, 0x0107); // all events from core v5.3 2311 #else 2312 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x0007); // all events from core v5.3 without LE Enhanced Connection Complete 2313 #endif 2314 break; 2315 } 2316 #endif 2317 2318 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2319 /* fall through */ 2320 2321 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2322 if (hci_le_supported() 2323 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2324 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2325 hci_send_cmd(&hci_le_read_maximum_data_length); 2326 break; 2327 } 2328 2329 /* fall through */ 2330 2331 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2332 if (hci_le_supported() 2333 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2334 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2335 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2336 break; 2337 } 2338 #endif 2339 2340 #ifdef ENABLE_LE_CENTRAL 2341 /* fall through */ 2342 2343 case HCI_INIT_READ_WHITE_LIST_SIZE: 2344 if (hci_le_supported()){ 2345 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2346 hci_send_cmd(&hci_le_read_white_list_size); 2347 break; 2348 } 2349 2350 #endif 2351 2352 #ifdef ENABLE_LE_PERIPHERAL 2353 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2354 /* fall through */ 2355 2356 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2357 if (hci_le_extended_advertising_supported()){ 2358 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2359 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2360 break; 2361 } 2362 #endif 2363 #endif 2364 /* fall through */ 2365 2366 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2367 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2368 if (hci_le_supported()) { 2369 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2370 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2371 break; 2372 } 2373 #endif 2374 2375 /* fall through */ 2376 2377 case HCI_INIT_DONE: 2378 hci_stack->substate = HCI_INIT_DONE; 2379 // main init sequence complete 2380 #ifdef ENABLE_CLASSIC 2381 // check if initial Classic GAP Tasks are completed 2382 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2383 hci_run_gap_tasks_classic(); 2384 break; 2385 } 2386 #endif 2387 #ifdef ENABLE_BLE 2388 #ifdef ENABLE_LE_CENTRAL 2389 // check if initial LE GAP Tasks are completed 2390 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2391 hci_run_general_gap_le(); 2392 break; 2393 } 2394 #endif 2395 #endif 2396 hci_init_done(); 2397 break; 2398 2399 default: 2400 return; 2401 } 2402 } 2403 2404 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2405 bool command_completed = false; 2406 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2407 uint16_t opcode = little_endian_read_16(packet,3); 2408 if (opcode == hci_stack->last_cmd_opcode){ 2409 command_completed = true; 2410 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2411 } else { 2412 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2413 } 2414 } 2415 2416 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2417 uint8_t status = packet[2]; 2418 uint16_t opcode = little_endian_read_16(packet,4); 2419 if (opcode == hci_stack->last_cmd_opcode){ 2420 if (status){ 2421 command_completed = true; 2422 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2423 } else { 2424 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2425 } 2426 } else { 2427 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2428 } 2429 } 2430 #ifndef HAVE_HOST_CONTROLLER_API 2431 // Vendor == CSR 2432 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2433 // TODO: track actual command 2434 command_completed = true; 2435 } 2436 2437 // Vendor == Toshiba 2438 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2439 // TODO: track actual command 2440 command_completed = true; 2441 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2442 hci_stack->num_cmd_packets = 1; 2443 } 2444 #endif 2445 2446 return command_completed; 2447 } 2448 2449 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2450 2451 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2452 2453 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2454 2455 #ifndef HAVE_HOST_CONTROLLER_API 2456 2457 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2458 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2459 // 2460 // HCI Reset 2461 // Timeout 100 ms 2462 // HCI Reset 2463 // Command Complete Reset 2464 // HCI Read Local Version Information 2465 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2466 // hang... 2467 // 2468 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2469 if (!command_completed 2470 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2471 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2472 2473 uint16_t opcode = little_endian_read_16(packet,3); 2474 if (opcode == hci_reset.opcode){ 2475 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2476 return; 2477 } 2478 } 2479 2480 // CSR & H5 2481 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2482 if (!command_completed 2483 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2484 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2485 2486 uint16_t opcode = little_endian_read_16(packet,3); 2487 if (opcode == hci_reset.opcode){ 2488 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2489 return; 2490 } 2491 } 2492 2493 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2494 // fix: Correct substate and behave as command below 2495 if (command_completed){ 2496 switch (hci_stack->substate){ 2497 case HCI_INIT_SEND_RESET: 2498 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2499 break; 2500 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2501 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2502 break; 2503 default: 2504 break; 2505 } 2506 } 2507 2508 #endif 2509 2510 if (!command_completed) return; 2511 2512 bool need_baud_change = false; 2513 bool need_addr_change = false; 2514 2515 #ifndef HAVE_HOST_CONTROLLER_API 2516 need_baud_change = hci_stack->config 2517 && hci_stack->chipset 2518 && hci_stack->chipset->set_baudrate_command 2519 && hci_stack->hci_transport->set_baudrate 2520 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2521 2522 need_addr_change = hci_stack->custom_bd_addr_set 2523 && hci_stack->chipset 2524 && hci_stack->chipset->set_bd_addr_command; 2525 #endif 2526 2527 switch(hci_stack->substate){ 2528 2529 #ifndef HAVE_HOST_CONTROLLER_API 2530 case HCI_INIT_SEND_RESET: 2531 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2532 // fix: just correct substate and behave as command below 2533 2534 /* fall through */ 2535 #endif 2536 2537 case HCI_INIT_W4_SEND_RESET: 2538 btstack_run_loop_remove_timer(&hci_stack->timeout); 2539 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2540 return; 2541 2542 #ifndef HAVE_HOST_CONTROLLER_API 2543 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2544 // for STLC2500D, baud rate change already happened. 2545 // for others, baud rate gets changed now 2546 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2547 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2548 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2549 hci_stack->hci_transport->set_baudrate(baud_rate); 2550 } 2551 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2552 return; 2553 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2554 btstack_run_loop_remove_timer(&hci_stack->timeout); 2555 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2556 return; 2557 case HCI_INIT_W4_CUSTOM_INIT: 2558 // repeat custom init 2559 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2560 return; 2561 case HCI_INIT_W4_CUSTOM_PRE_INIT: 2562 // repeat custom init 2563 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 2564 return; 2565 #endif 2566 2567 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2568 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2569 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2570 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2571 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2572 return; 2573 } 2574 if (need_addr_change){ 2575 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2576 return; 2577 } 2578 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2579 return; 2580 #ifndef HAVE_HOST_CONTROLLER_API 2581 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2582 if (need_baud_change){ 2583 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2584 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2585 hci_stack->hci_transport->set_baudrate(baud_rate); 2586 } 2587 if (need_addr_change){ 2588 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2589 return; 2590 } 2591 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2592 return; 2593 case HCI_INIT_W4_SET_BD_ADDR: 2594 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2595 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2596 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2597 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2598 return; 2599 } 2600 // skipping st warm boot 2601 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2602 return; 2603 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2604 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2605 return; 2606 #endif 2607 2608 case HCI_INIT_DONE: 2609 // set state if we came here by fall through 2610 hci_stack->substate = HCI_INIT_DONE; 2611 return; 2612 2613 default: 2614 break; 2615 } 2616 hci_initializing_next_state(); 2617 } 2618 2619 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2620 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2621 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2622 // check if we have been aware of the HCI connection 2623 switch (conn->state){ 2624 case SENT_CREATE_CONNECTION: 2625 case RECEIVED_CONNECTION_REQUEST: 2626 case ACCEPTED_CONNECTION_REQUEST: 2627 break; 2628 default: 2629 return; 2630 } 2631 2632 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2633 bd_addr_t bd_address; 2634 (void)memcpy(&bd_address, conn->address, 6); 2635 2636 #ifdef ENABLE_CLASSIC 2637 // cache needed data 2638 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2639 #endif 2640 2641 // connection failed, remove entry 2642 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2643 btstack_memory_hci_connection_free( conn ); 2644 2645 #ifdef ENABLE_CLASSIC 2646 // notify client if dedicated bonding 2647 if (notify_dedicated_bonding_failed){ 2648 log_info("hci notify_dedicated_bonding_failed"); 2649 hci_emit_dedicated_bonding_result(bd_address, status); 2650 } 2651 2652 // if authentication error, also delete link key 2653 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2654 gap_drop_link_key_for_bd_addr(bd_address); 2655 } 2656 #else 2657 UNUSED(status); 2658 #endif 2659 } 2660 2661 #ifdef ENABLE_CLASSIC 2662 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2663 // SSP Controller 2664 if (features[6] & (1 << 3)){ 2665 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2666 } 2667 // eSCO 2668 if (features[3] & (1<<7)){ 2669 conn->remote_supported_features[0] |= 1; 2670 } 2671 // Extended features 2672 if (features[7] & (1<<7)){ 2673 conn->remote_supported_features[0] |= 2; 2674 } 2675 // SCO packet types 2676 conn->remote_supported_sco_packets = hci_sco_packet_types_for_features(features); 2677 } 2678 2679 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2680 // SSP Host 2681 if (features[0] & (1 << 0)){ 2682 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2683 } 2684 // SC Host 2685 if (features[0] & (1 << 3)){ 2686 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2687 } 2688 } 2689 2690 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2691 // SC Controller 2692 if (features[1] & (1 << 0)){ 2693 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2694 } 2695 } 2696 2697 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2698 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2699 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2700 log_info("Remote features %02x, bonding flags %" PRIx32, conn->remote_supported_features[0], conn->bonding_flags); 2701 if (conn->bonding_flags & BONDING_DEDICATED){ 2702 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2703 } 2704 } 2705 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2706 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2707 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2708 } 2709 2710 #endif 2711 2712 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2713 // handle BT initialization 2714 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2715 hci_initializing_event_handler(packet, size); 2716 } 2717 2718 // help with BT sleep 2719 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2720 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2721 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2722 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2723 hci_initializing_next_state(); 2724 } 2725 } 2726 2727 #ifdef ENABLE_CLASSIC 2728 static void hci_handle_mutual_authentication_completed(hci_connection_t * conn){ 2729 // bonding complete if connection is authenticated (either initiated or BR/EDR SC) 2730 conn->requested_security_level = LEVEL_0; 2731 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2732 hci_emit_security_level(conn->con_handle, security_level); 2733 2734 // dedicated bonding 2735 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2736 conn->bonding_flags &= ~BONDING_DEDICATED; 2737 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2738 #ifdef ENABLE_EXPLICIT_DEDICATED_BONDING_DISCONNECT 2739 // emit dedicated bonding complete, don't disconnect 2740 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2741 #else 2742 // request disconnect, event is emitted after disconnect 2743 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2744 #endif 2745 } 2746 } 2747 2748 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2749 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2750 conn->encryption_key_size = encryption_key_size; 2751 2752 // mutual authentication complete if authenticated and we have retrieved the encryption key size 2753 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2754 hci_handle_mutual_authentication_completed(conn); 2755 } else { 2756 // otherwise trigger remote feature request and send authentication request 2757 hci_trigger_remote_features_for_connection(conn); 2758 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) { 2759 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2760 } 2761 } 2762 } 2763 #endif 2764 2765 static void hci_store_local_supported_commands(const uint8_t * packet){ 2766 // create mapping table 2767 #define X(name, offset, bit) { offset, bit }, 2768 static struct { 2769 uint8_t byte_offset; 2770 uint8_t bit_position; 2771 } supported_hci_commands_map [] = { 2772 SUPPORTED_HCI_COMMANDS 2773 }; 2774 #undef X 2775 2776 // create names for debug purposes 2777 #ifdef ENABLE_LOG_DEBUG 2778 #define X(name, offset, bit) #name, 2779 static const char * command_names[] = { 2780 SUPPORTED_HCI_COMMANDS 2781 }; 2782 #undef X 2783 #endif 2784 2785 hci_stack->local_supported_commands = 0; 2786 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2787 uint16_t i; 2788 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2789 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2790 #ifdef ENABLE_LOG_DEBUG 2791 log_info("Command %s (%u) supported %u/%u", command_names[i], i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2792 #else 2793 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2794 #endif 2795 hci_stack->local_supported_commands |= (1LU << i); 2796 } 2797 } 2798 log_info("Local supported commands summary %08" PRIx32, hci_stack->local_supported_commands); 2799 } 2800 2801 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2802 UNUSED(size); 2803 2804 uint8_t status = 0; 2805 if( size > OFFSET_OF_DATA_IN_COMMAND_COMPLETE ) { 2806 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2807 } 2808 uint16_t manufacturer; 2809 #ifdef ENABLE_CLASSIC 2810 hci_connection_t * conn; 2811 #endif 2812 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2813 hci_con_handle_t handle; 2814 #endif 2815 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2816 le_audio_cig_t * cig; 2817 #endif 2818 #if defined(ENABLE_BLE) && defined(ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 2819 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 2820 #endif 2821 2822 // get num cmd packets - limit to 1 to reduce complexity 2823 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2824 2825 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2826 switch (opcode){ 2827 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2828 if (status) break; 2829 // terminate, name 248 chars 2830 packet[6+248] = 0; 2831 log_info("local name: %s", &packet[6]); 2832 break; 2833 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2834 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2835 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2836 uint16_t acl_len = little_endian_read_16(packet, 6); 2837 uint16_t sco_len = packet[8]; 2838 2839 // determine usable ACL/SCO payload size 2840 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2841 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2842 2843 hci_stack->acl_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 9), MAX_NR_CONTROLLER_ACL_BUFFERS); 2844 hci_stack->sco_packets_total_num = (uint8_t) btstack_min(little_endian_read_16(packet, 11), MAX_NR_CONTROLLER_SCO_PACKETS); 2845 2846 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2847 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2848 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2849 } 2850 break; 2851 case HCI_OPCODE_HCI_READ_RSSI: 2852 if (status == ERROR_CODE_SUCCESS){ 2853 uint8_t event[5]; 2854 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2855 event[1] = 3; 2856 (void)memcpy(&event[2], &packet[6], 3); 2857 hci_emit_btstack_event(event, sizeof(event), 1); 2858 } 2859 break; 2860 #ifdef ENABLE_BLE 2861 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2862 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2863 hci_stack->le_iso_packets_total_num = packet[11]; 2864 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2865 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2866 2867 /* fall through */ 2868 2869 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2870 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2871 hci_stack->le_acl_packets_total_num = packet[8]; 2872 // determine usable ACL payload size 2873 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2874 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2875 } 2876 log_info("hci_le_read_buffer_size: acl size %u, acl count %u", hci_stack->le_data_packets_length, hci_stack->le_acl_packets_total_num); 2877 break; 2878 #endif 2879 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2880 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2881 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2882 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2883 log_info("hci_le_read_maximum_data_length: tx octets %u, tx time %u us", hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2884 break; 2885 #endif 2886 #ifdef ENABLE_LE_CENTRAL 2887 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2888 hci_stack->le_whitelist_capacity = packet[6]; 2889 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2890 break; 2891 #endif 2892 #ifdef ENABLE_LE_PERIPHERAL 2893 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2894 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2895 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2896 break; 2897 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2898 if (hci_stack->le_advertising_set_in_current_command != 0) { 2899 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2900 hci_stack->le_advertising_set_in_current_command = 0; 2901 if (advertising_set == NULL) break; 2902 uint8_t adv_status = packet[6]; 2903 uint8_t tx_power = packet[7]; 2904 uint8_t event[] = { HCI_EVENT_META_GAP, 4, GAP_SUBEVENT_ADVERTISING_SET_INSTALLED, hci_stack->le_advertising_set_in_current_command, adv_status, tx_power }; 2905 if (adv_status == 0){ 2906 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2907 } 2908 hci_emit_btstack_event(event, sizeof(event), 1); 2909 } 2910 break; 2911 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2912 if (hci_stack->le_advertising_set_in_current_command != 0) { 2913 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2914 hci_stack->le_advertising_set_in_current_command = 0; 2915 if (advertising_set == NULL) break; 2916 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, status }; 2917 if (status == 0){ 2918 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2919 } 2920 hci_emit_btstack_event(event, sizeof(event), 1); 2921 } 2922 break; 2923 #endif 2924 #endif 2925 case HCI_OPCODE_HCI_READ_BD_ADDR: 2926 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2927 log_info("Local Address, Status: 0x%02x: Addr: %s", status, bd_addr_to_str(hci_stack->local_bd_addr)); 2928 #ifdef ENABLE_CLASSIC 2929 if (hci_stack->link_key_db){ 2930 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2931 } 2932 #endif 2933 break; 2934 #ifdef ENABLE_CLASSIC 2935 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2936 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2937 break; 2938 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2939 if (status == ERROR_CODE_SUCCESS) { 2940 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2941 } else { 2942 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2943 } 2944 break; 2945 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2946 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2947 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2948 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2949 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2950 hci_emit_btstack_event(event, sizeof(event), 1); 2951 } 2952 break; 2953 #endif 2954 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2955 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2956 2957 #ifdef ENABLE_CLASSIC 2958 // determine usable ACL packet types based on host buffer size and supported features 2959 hci_stack->usable_packet_types_acl = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2960 log_info("ACL Packet types %04x", hci_stack->usable_packet_types_acl); 2961 // determine usable SCO packet types based on supported features 2962 hci_stack->usable_packet_types_sco = hci_sco_packet_types_for_features( 2963 &hci_stack->local_supported_features[0]); 2964 log_info("SCO Packet types %04x - eSCO %u", hci_stack->usable_packet_types_sco, hci_extended_sco_link_supported()); 2965 #endif 2966 // Classic/LE 2967 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2968 break; 2969 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2970 manufacturer = little_endian_read_16(packet, 10); 2971 // map Cypress & Infineon to Broadcom 2972 switch (manufacturer){ 2973 case BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR: 2974 case BLUETOOTH_COMPANY_ID_INFINEON_TECHNOLOGIES_AG: 2975 log_info("Treat Cypress/Infineon as Broadcom"); 2976 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2977 little_endian_store_16(packet, 10, manufacturer); 2978 break; 2979 default: 2980 break; 2981 } 2982 hci_stack->manufacturer = manufacturer; 2983 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2984 break; 2985 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2986 hci_store_local_supported_commands(packet); 2987 break; 2988 #ifdef ENABLE_CLASSIC 2989 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2990 if (status) return; 2991 hci_stack->synchronous_flow_control_enabled = 1; 2992 break; 2993 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2994 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2995 conn = hci_connection_for_handle(handle); 2996 if (conn != NULL) { 2997 uint8_t key_size = 0; 2998 if (status == 0){ 2999 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 3000 log_info("Handle %04x key Size: %u", handle, key_size); 3001 } else { 3002 key_size = 1; 3003 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 3004 } 3005 hci_handle_read_encryption_key_size_complete(conn, key_size); 3006 } 3007 break; 3008 // assert pairing complete event is emitted. 3009 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 3010 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 3011 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 3012 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 3013 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 3014 // lookup connection by gap pairing addr 3015 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 3016 if (conn == NULL) break; 3017 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3018 break; 3019 3020 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3021 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 3022 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 3023 uint8_t event[67]; 3024 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 3025 event[1] = 65; 3026 (void)memset(&event[2], 0, 65); 3027 if (status == ERROR_CODE_SUCCESS){ 3028 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 3029 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 3030 event[2] = 3; 3031 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 3032 } else { 3033 event[2] = 1; 3034 } 3035 } 3036 hci_emit_btstack_event(event, sizeof(event), 0); 3037 break; 3038 } 3039 3040 // note: only needed if user does not provide OOB data 3041 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 3042 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 3043 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3044 if (conn == NULL) break; 3045 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 3046 break; 3047 #endif 3048 #endif 3049 #ifdef ENABLE_BLE 3050 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3051 case HCI_OPCODE_HCI_LE_SET_CIG_PARAMETERS: 3052 // lookup CIG 3053 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3054 if (cig != NULL){ 3055 uint8_t i = 0; 3056 if (status == ERROR_CODE_SUCCESS){ 3057 // assign CIS handles to pre-allocated CIS 3058 btstack_linked_list_iterator_t it; 3059 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3060 while (btstack_linked_list_iterator_has_next(&it) && (i < cig->num_cis)) { 3061 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3062 if ((iso_stream->group_id == hci_stack->iso_active_operation_group_id) && 3063 (iso_stream->iso_type == HCI_ISO_TYPE_CIS)){ 3064 hci_con_handle_t cis_handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3+(2*i)); 3065 iso_stream->cis_handle = cis_handle; 3066 cig->cis_con_handles[i] = cis_handle; 3067 i++; 3068 } 3069 } 3070 cig->state = LE_AUDIO_CIG_STATE_W4_CIS_REQUEST; 3071 hci_emit_cig_created(cig, status); 3072 } else { 3073 hci_emit_cig_created(cig, status); 3074 btstack_linked_list_remove(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 3075 } 3076 } 3077 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3078 break; 3079 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3080 if (status != ERROR_CODE_SUCCESS){ 3081 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3082 } 3083 break; 3084 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3085 if (status != ERROR_CODE_SUCCESS){ 3086 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3087 } 3088 break; 3089 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 3090 // lookup BIG by state 3091 btstack_linked_list_iterator_t it; 3092 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 3093 while (btstack_linked_list_iterator_has_next(&it)) { 3094 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 3095 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3096 if (status == ERROR_CODE_SUCCESS){ 3097 big->state_vars.next_bis++; 3098 if (big->state_vars.next_bis == big->num_bis){ 3099 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 3100 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 3101 } else { 3102 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3103 } 3104 } else { 3105 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3106 big->state_vars.status = status; 3107 } 3108 return; 3109 } 3110 } 3111 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3112 while (btstack_linked_list_iterator_has_next(&it)) { 3113 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3114 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 3115 if (status == ERROR_CODE_SUCCESS){ 3116 big_sync->state_vars.next_bis++; 3117 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 3118 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 3119 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 3120 } else { 3121 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3122 } 3123 } else { 3124 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 3125 big_sync->state_vars.status = status; 3126 } 3127 return; 3128 } 3129 } 3130 // Lookup CIS via active group operation 3131 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 3132 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 3133 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3134 3135 // lookup CIS by state 3136 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3137 while (btstack_linked_list_iterator_has_next(&it)){ 3138 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3139 handle = iso_stream->cis_handle; 3140 bool emit_cis_created = false; 3141 switch (iso_stream->state){ 3142 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT: 3143 if (status != ERROR_CODE_SUCCESS){ 3144 emit_cis_created = true; 3145 break; 3146 } 3147 if (iso_stream->max_sdu_c_to_p > 0){ 3148 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 3149 } else { 3150 emit_cis_created = true; 3151 } 3152 break; 3153 case HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT: 3154 emit_cis_created = true; 3155 break; 3156 default: 3157 break; 3158 } 3159 if (emit_cis_created){ 3160 hci_cis_handle_created(iso_stream, status); 3161 } 3162 } 3163 } else { 3164 cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 3165 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3166 if (cig != NULL) { 3167 // emit cis created if all ISO Paths have been created 3168 // assume we are central 3169 uint8_t cis_index = cig->state_vars.next_cis >> 1; 3170 uint8_t cis_direction = cig->state_vars.next_cis & 1; 3171 bool outgoing_needed = cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 3172 // if outgoing has been setup, or incoming was setup but outgoing not required 3173 if ((cis_direction == 1) || (outgoing_needed == false)){ 3174 // lookup iso stream by cig/cis 3175 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3176 while (btstack_linked_list_iterator_has_next(&it)) { 3177 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3178 if ((iso_stream->group_id == cig->cig_id) && (iso_stream->stream_id == cis_index)){ 3179 hci_cis_handle_created(iso_stream, status); 3180 } 3181 } 3182 } 3183 // next state 3184 cig->state_vars.next_cis++; 3185 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 3186 } 3187 } 3188 } 3189 break; 3190 } 3191 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 3192 // lookup BIG by state 3193 btstack_linked_list_iterator_t it; 3194 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 3195 while (btstack_linked_list_iterator_has_next(&it)) { 3196 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 3197 uint8_t big_handle = big_sync->big_handle; 3198 switch (big_sync->state){ 3199 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3200 btstack_linked_list_iterator_remove(&it); 3201 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 3202 return; 3203 default: 3204 btstack_linked_list_iterator_remove(&it); 3205 hci_emit_big_sync_stopped(big_handle); 3206 return; 3207 } 3208 } 3209 break; 3210 } 3211 #endif 3212 #endif 3213 default: 3214 break; 3215 } 3216 } 3217 3218 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 3219 UNUSED(size); 3220 3221 // get num cmd packets - limit to 1 to reduce complexity 3222 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 3223 3224 // get opcode and command status 3225 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 3226 3227 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 3228 uint8_t status = hci_event_command_status_get_status(packet); 3229 #endif 3230 3231 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3232 bd_addr_type_t addr_type; 3233 bd_addr_t addr; 3234 #endif 3235 3236 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 3237 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 3238 #endif 3239 3240 switch (opcode){ 3241 #ifdef ENABLE_CLASSIC 3242 case HCI_OPCODE_HCI_CREATE_CONNECTION: 3243 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 3244 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 3245 #endif 3246 #ifdef ENABLE_LE_CENTRAL 3247 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 3248 #endif 3249 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 3250 addr_type = hci_stack->outgoing_addr_type; 3251 memcpy(addr, hci_stack->outgoing_addr, 6); 3252 3253 // reset outgoing address info 3254 memset(hci_stack->outgoing_addr, 0, 6); 3255 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 3256 3257 // on error 3258 if (status != ERROR_CODE_SUCCESS){ 3259 #ifdef ENABLE_LE_CENTRAL 3260 if (hci_is_le_connection_type(addr_type)){ 3261 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3262 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3263 } 3264 #endif 3265 // error => outgoing connection failed 3266 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3267 if (conn != NULL){ 3268 hci_handle_connection_failed(conn, status); 3269 } 3270 } 3271 break; 3272 #endif 3273 #ifdef ENABLE_CLASSIC 3274 case HCI_OPCODE_HCI_INQUIRY: 3275 if (status == ERROR_CODE_SUCCESS) { 3276 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3277 } else { 3278 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3279 } 3280 break; 3281 #endif 3282 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3283 case HCI_OPCODE_HCI_LE_CREATE_CIS: 3284 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 3285 if (status == ERROR_CODE_SUCCESS){ 3286 hci_iso_stream_requested_confirm(HCI_ISO_GROUP_ID_INVALID); 3287 } else { 3288 hci_iso_stream_requested_finalize(HCI_ISO_GROUP_ID_INVALID); 3289 } 3290 break; 3291 case HCI_OPCODE_HCI_LE_CREATE_BIG: 3292 if (status != ERROR_CODE_SUCCESS){ 3293 log_info("TODO: handle Create BIG failed"); 3294 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3295 } 3296 break; 3297 case HCI_OPCODE_HCI_LE_BIG_CREATE_SYNC: 3298 if (status != ERROR_CODE_SUCCESS){ 3299 log_info("TODO: handle BIG Sync failed"); 3300 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 3301 } 3302 break; 3303 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 3304 default: 3305 break; 3306 } 3307 } 3308 3309 #ifdef ENABLE_BLE 3310 static void hci_create_gap_connection_complete_event(const uint8_t * hci_event, uint8_t * gap_event) { 3311 gap_event[0] = HCI_EVENT_META_GAP; 3312 gap_event[1] = 36 - 2; 3313 gap_event[2] = GAP_SUBEVENT_LE_CONNECTION_COMPLETE; 3314 switch (hci_event_le_meta_get_subevent_code(hci_event)){ 3315 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3316 memcpy(&gap_event[3], &hci_event[3], 11); 3317 memset(&gap_event[14], 0, 12); 3318 memcpy(&gap_event[26], &hci_event[14], 7); 3319 memset(&gap_event[33], 0xff, 3); 3320 break; 3321 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 3322 memcpy(&gap_event[3], &hci_event[3], 30); 3323 memset(&gap_event[33], 0xff, 3); 3324 break; 3325 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 3326 memcpy(&gap_event[3], &hci_event[3], 33); 3327 break; 3328 default: 3329 btstack_unreachable(); 3330 break; 3331 } 3332 } 3333 3334 static void hci_handle_le_connection_complete_event(const uint8_t * hci_event){ 3335 bd_addr_t addr; 3336 bd_addr_type_t addr_type; 3337 hci_connection_t * conn; 3338 3339 // create GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3340 uint8_t gap_event[36]; 3341 hci_create_gap_connection_complete_event(hci_event, gap_event); 3342 3343 // read fields 3344 uint8_t status = gap_subevent_le_connection_complete_get_status(gap_event); 3345 hci_role_t role = (hci_role_t) gap_subevent_le_connection_complete_get_role(gap_event); 3346 uint16_t conn_interval = gap_subevent_le_connection_complete_get_conn_interval(gap_event); 3347 3348 // Connection management 3349 gap_subevent_le_connection_complete_get_peer_address(gap_event, addr); 3350 addr_type = (bd_addr_type_t) gap_subevent_le_connection_complete_get_peer_address_type(gap_event); 3351 log_info("LE Connection_complete (status=%u) type %u, %s", status, addr_type, bd_addr_to_str(addr)); 3352 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3353 3354 #ifdef ENABLE_LE_CENTRAL 3355 // handle error: error is reported only to the initiator -> outgoing connection 3356 if (status){ 3357 3358 // handle cancelled outgoing connection 3359 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 3360 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 3361 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 3362 bool connection_was_cancelled = false; 3363 if (status == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 3364 connection_was_cancelled = true; 3365 // reset state 3366 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3367 // get outgoing connection conn struct for direct connect 3368 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 3369 conn = gap_get_outgoing_le_connection(); 3370 conn->state = SEND_CREATE_CONNECTION; 3371 } 3372 } 3373 3374 // free connection if cancelled by user (request == IDLE) 3375 bool cancelled_by_user = hci_stack->le_connecting_request == LE_CONNECTING_IDLE; 3376 if ((conn != NULL) && cancelled_by_user){ 3377 // remove entry 3378 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3379 btstack_memory_hci_connection_free( conn ); 3380 } 3381 3382 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE for: 3383 // - outgoing error not caused by connection cancel 3384 // - connection cancelled by user 3385 // by this, no event is emitted for intermediate connection cancel required filterlist modification 3386 if ((connection_was_cancelled == false) || cancelled_by_user){ 3387 hci_emit_event(gap_event, sizeof(gap_event), 1); 3388 } 3389 return; 3390 } 3391 #endif 3392 3393 // on success, both hosts receive connection complete event 3394 if (role == HCI_ROLE_MASTER){ 3395 #ifdef ENABLE_LE_CENTRAL 3396 // if we're master, it was an outgoing connection 3397 // note: no hci_connection_t object exists yet for connect with whitelist 3398 3399 // if a identity addresses was used without enhanced connection complete event, 3400 // the connection complete event contains the current random address of the peer device. 3401 // This random address is needed in the case of a re-pairing 3402 if (hci_event_le_meta_get_subevent_code(hci_event) == HCI_SUBEVENT_LE_CONNECTION_COMPLETE){ 3403 conn = gap_get_outgoing_le_connection(); 3404 // if outgoing connection object is available, check if identity address was used. 3405 // if yes, track resolved random address and provide rpa 3406 // note: we don't update hci le subevent connection complete 3407 if (conn != NULL){ 3408 if (hci_is_le_identity_address_type(conn->address_type)){ 3409 memcpy(&gap_event[20], &gap_event[8], 6); 3410 gap_event[7] = conn->address_type; 3411 reverse_bd_addr(conn->address, &gap_event[8]); 3412 } 3413 } 3414 } 3415 3416 // we're done with it 3417 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3418 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3419 #endif 3420 } else { 3421 #ifdef ENABLE_LE_PERIPHERAL 3422 // if we're slave, it was an incoming connection, advertisements have stopped 3423 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3424 #endif 3425 } 3426 3427 // LE connections are auto-accepted, so just create a connection if there isn't one already 3428 if (!conn){ 3429 conn = create_connection_for_bd_addr_and_type(addr, addr_type, role); 3430 } 3431 3432 // no memory, sorry. 3433 if (!conn){ 3434 return; 3435 } 3436 3437 conn->state = OPEN; 3438 conn->con_handle = gap_subevent_le_connection_complete_get_connection_handle(gap_event); 3439 conn->le_connection_interval = conn_interval; 3440 3441 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3442 // workaround: PAST doesn't work without LE Read Remote Features on PacketCraft Controller with LMP 568B 3443 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_REMOTE_FEATURES)){ 3444 conn->gap_connection_tasks = GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 3445 } 3446 #endif 3447 3448 #ifdef ENABLE_LE_PERIPHERAL 3449 if (role == HCI_ROLE_SLAVE){ 3450 hci_update_advertisements_enabled_for_current_roles(); 3451 } 3452 #endif 3453 3454 // init unenhanced att bearer mtu 3455 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3456 conn->att_connection.mtu_exchanged = false; 3457 3458 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3459 3460 // restart timer 3461 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3462 // btstack_run_loop_add_timer(&conn->timeout); 3463 3464 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3465 3466 // emit GAP_SUBEVENT_LE_CONNECTION_COMPLETE 3467 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 3468 3469 // emit BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 3470 hci_emit_nr_connections_changed(); 3471 } 3472 #endif 3473 3474 #ifdef ENABLE_CLASSIC 3475 static bool hci_ssp_security_level_possible_for_io_cap(gap_security_level_t level, uint8_t io_cap_local, uint8_t io_cap_remote){ 3476 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3477 // LEVEL_4 is tested by l2cap 3478 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3479 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3480 if (level >= LEVEL_3){ 3481 // MITM not possible without keyboard or display 3482 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3483 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3484 3485 // MITM possible if one side has keyboard and the other has keyboard or display 3486 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3487 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3488 3489 // MITM not possible if one side has only display and other side has no keyboard 3490 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3491 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3492 } 3493 // LEVEL 2 requires SSP, which is a given 3494 return true; 3495 } 3496 3497 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3498 // get requested security level 3499 gap_security_level_t requested_security_level = conn->requested_security_level; 3500 if (hci_stack->gap_secure_connections_only_mode){ 3501 requested_security_level = LEVEL_4; 3502 } 3503 3504 // assess security: LEVEL 4 requires SC 3505 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3506 if ((requested_security_level == LEVEL_4) && 3507 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3508 !hci_remote_sc_enabled(conn)){ 3509 log_info("Level 4 required, but SC not supported -> abort"); 3510 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3511 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3512 return; 3513 } 3514 3515 // assess bonding requirements: abort if remote in dedicated bonding mode but we are non-bonding 3516 // - GAP/MOD/NBON/BV-02-C 3517 // - GAP/DM/NBON/BV-01-C 3518 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3519 switch (conn->io_cap_response_auth_req){ 3520 case SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING: 3521 case SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING: 3522 if (hci_stack->bondable == false){ 3523 log_info("Dedicated vs. non-bondable -> abort"); 3524 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3525 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3526 return; 3527 } 3528 default: 3529 break; 3530 } 3531 } 3532 3533 // assess security based on io capabilities 3534 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3535 // responder: fully validate io caps of both sides as well as OOB data 3536 bool security_possible = false; 3537 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3538 3539 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3540 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3541 // so we merge the OOB data availability 3542 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3543 if (conn->classic_oob_c_192 != NULL){ 3544 have_oob_data |= 1; 3545 } 3546 if (conn->classic_oob_c_256 != NULL){ 3547 have_oob_data |= 2; 3548 } 3549 // for up to Level 3, either P-192 as well as P-256 will do 3550 // if we don't support SC, then a) conn->classic_oob_c_256 will be NULL and b) remote should not report P-256 available 3551 // if remote does not SC, we should not receive P-256 data either 3552 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3553 security_possible = true; 3554 } 3555 // for Level 4, P-256 is needed 3556 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3557 security_possible = true; 3558 } 3559 #endif 3560 3561 if (security_possible == false){ 3562 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3563 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3564 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3565 return; 3566 } 3567 } else { 3568 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3569 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3570 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3571 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3572 log_info("Level 3+ required, but no input/output -> abort"); 3573 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3574 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3575 return; 3576 } 3577 #endif 3578 #endif 3579 } 3580 3581 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3582 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3583 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3584 } else { 3585 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3586 } 3587 #endif 3588 } 3589 3590 #endif 3591 3592 static void event_handler(uint8_t *packet, uint16_t size){ 3593 3594 uint16_t event_length = packet[1]; 3595 3596 // assert packet is complete 3597 if (size != (event_length + 2u)){ 3598 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3599 return; 3600 } 3601 3602 hci_con_handle_t handle; 3603 hci_connection_t * conn; 3604 int i; 3605 3606 #ifdef ENABLE_CLASSIC 3607 hci_link_type_t link_type; 3608 bd_addr_t addr; 3609 bd_addr_type_t addr_type; 3610 #endif 3611 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3612 hci_iso_stream_t * iso_stream; 3613 le_audio_big_t * big; 3614 le_audio_big_sync_t * big_sync; 3615 #endif 3616 #if defined(ENABLE_LE_ISOCHRONOUS_STREAMS) || defined(ENABLE_LE_EXTENDED_ADVERTISING) 3617 btstack_linked_list_iterator_t it; 3618 #endif 3619 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3620 uint8_t advertising_handle; 3621 #endif 3622 3623 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3624 3625 switch (hci_event_packet_get_type(packet)) { 3626 3627 case HCI_EVENT_COMMAND_COMPLETE: 3628 handle_command_complete_event(packet, size); 3629 break; 3630 3631 case HCI_EVENT_COMMAND_STATUS: 3632 handle_command_status_event(packet, size); 3633 break; 3634 3635 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3636 if (size < 3) return; 3637 uint16_t num_handles = packet[2]; 3638 if (size != (3u + num_handles * 4u)) return; 3639 #ifdef ENABLE_CLASSIC 3640 bool notify_sco = false; 3641 #endif 3642 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3643 bool notify_iso = false; 3644 #endif 3645 uint16_t offset = 3; 3646 for (i=0; i<num_handles;i++){ 3647 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3648 offset += 2u; 3649 uint16_t num_packets = little_endian_read_16(packet, offset); 3650 offset += 2u; 3651 3652 conn = hci_connection_for_handle(handle); 3653 if (conn != NULL) { 3654 3655 if (conn->num_packets_sent >= num_packets) { 3656 conn->num_packets_sent -= num_packets; 3657 } else { 3658 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3659 conn->num_packets_sent = 0; 3660 } 3661 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3662 #ifdef ENABLE_CLASSIC 3663 if (conn->address_type == BD_ADDR_TYPE_SCO){ 3664 notify_sco = true; 3665 } 3666 #endif 3667 } 3668 3669 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3670 hci_controller_dump_packets(); 3671 #endif 3672 3673 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3674 if (conn == NULL){ 3675 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3676 if (iso_stream != NULL){ 3677 if (iso_stream->num_packets_sent >= num_packets) { 3678 iso_stream->num_packets_sent -= num_packets; 3679 } else { 3680 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3681 iso_stream->num_packets_sent = 0; 3682 } 3683 if (iso_stream->iso_type == HCI_ISO_TYPE_BIS){ 3684 le_audio_big_t * big = hci_big_for_handle(iso_stream->group_id); 3685 if (big != NULL){ 3686 big->num_completed_timestamp_current_valid = true; 3687 big->num_completed_timestamp_current_ms = btstack_run_loop_get_time_ms(); 3688 } 3689 } 3690 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3691 num_packets, handle, iso_stream->num_packets_sent); 3692 notify_iso = true; 3693 } 3694 } 3695 #endif 3696 } 3697 3698 #ifdef ENABLE_CLASSIC 3699 if (notify_sco){ 3700 hci_notify_if_sco_can_send_now(); 3701 } 3702 #endif 3703 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3704 if (notify_iso){ 3705 hci_iso_notify_can_send_now(); 3706 } 3707 #endif 3708 break; 3709 } 3710 3711 #ifdef ENABLE_CLASSIC 3712 case HCI_EVENT_FLUSH_OCCURRED: 3713 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3714 handle = hci_event_flush_occurred_get_handle(packet); 3715 conn = hci_connection_for_handle(handle); 3716 if (conn) { 3717 log_info("Flush occurred, disconnect 0x%04x", handle); 3718 conn->state = SEND_DISCONNECT; 3719 } 3720 break; 3721 3722 case HCI_EVENT_INQUIRY_COMPLETE: 3723 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3724 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3725 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3726 hci_emit_btstack_event(event, sizeof(event), 1); 3727 } 3728 break; 3729 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3730 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3731 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3732 } 3733 break; 3734 case HCI_EVENT_CONNECTION_REQUEST: 3735 reverse_bd_addr(&packet[2], addr); 3736 link_type = (hci_link_type_t) packet[11]; 3737 3738 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3739 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3740 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3741 bd_addr_copy(hci_stack->decline_addr, addr); 3742 break; 3743 } 3744 3745 if (hci_stack->gap_classic_accept_callback != NULL){ 3746 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3747 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3748 bd_addr_copy(hci_stack->decline_addr, addr); 3749 break; 3750 } 3751 } 3752 3753 // TODO: eval COD 8-10 3754 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3755 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3756 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3757 if (!conn) { 3758 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_SLAVE); 3759 } 3760 if (!conn) { 3761 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3762 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3763 bd_addr_copy(hci_stack->decline_addr, addr); 3764 hci_run(); 3765 // avoid event to higher layer 3766 return; 3767 } 3768 conn->state = RECEIVED_CONNECTION_REQUEST; 3769 // store info about eSCO 3770 if (link_type == HCI_LINK_TYPE_ESCO){ 3771 conn->remote_supported_features[0] |= 1; 3772 } 3773 // propagate remote supported sco packet packets from existing ACL to new SCO connection 3774 if (addr_type == BD_ADDR_TYPE_SCO){ 3775 const hci_connection_t * acl_conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3776 // ACL exists unless fuzzing 3777 if (acl_conn != NULL) { 3778 conn->remote_supported_sco_packets = acl_conn->remote_supported_sco_packets; 3779 } 3780 } 3781 hci_run(); 3782 break; 3783 3784 case HCI_EVENT_CONNECTION_COMPLETE: 3785 // Connection management 3786 reverse_bd_addr(&packet[5], addr); 3787 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3788 addr_type = BD_ADDR_TYPE_ACL; 3789 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3790 if (conn) { 3791 switch (conn->state){ 3792 // expected states 3793 case ACCEPTED_CONNECTION_REQUEST: 3794 case SENT_CREATE_CONNECTION: 3795 break; 3796 // unexpected state -> ignore 3797 default: 3798 // don't forward event to app 3799 return; 3800 } 3801 if (!packet[2]){ 3802 conn->state = OPEN; 3803 conn->con_handle = little_endian_read_16(packet, 3); 3804 3805 // trigger write supervision timeout if we're master 3806 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3807 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3808 } 3809 3810 // trigger write automatic flush timeout 3811 if (hci_stack->automatic_flush_timeout != 0){ 3812 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3813 } 3814 3815 // restart timer 3816 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3817 btstack_run_loop_add_timer(&conn->timeout); 3818 3819 // trigger remote features for dedicated bonding 3820 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3821 hci_trigger_remote_features_for_connection(conn); 3822 } 3823 3824 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3825 3826 hci_emit_nr_connections_changed(); 3827 } else { 3828 // connection failed 3829 hci_handle_connection_failed(conn, packet[2]); 3830 } 3831 } 3832 break; 3833 3834 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3835 reverse_bd_addr(&packet[5], addr); 3836 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3837 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3838 3839 // SCO exists unless fuzzer 3840 if (conn == NULL) break; 3841 3842 if (packet[2] != ERROR_CODE_SUCCESS){ 3843 // connection failed, remove entry 3844 hci_handle_connection_failed(conn, packet[2]); 3845 break; 3846 } 3847 3848 conn->state = OPEN; 3849 conn->con_handle = little_endian_read_16(packet, 3); 3850 3851 // update sco payload length for eSCO connections 3852 if (hci_event_synchronous_connection_complete_get_tx_packet_length(packet) > 0){ 3853 conn->sco_payload_length = hci_event_synchronous_connection_complete_get_tx_packet_length(packet); 3854 log_info("eSCO Complete, set payload len %u", conn->sco_payload_length); 3855 } 3856 3857 #ifdef ENABLE_SCO_OVER_HCI 3858 // update SCO 3859 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3860 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3861 } 3862 // trigger can send now 3863 if (hci_have_usb_transport()){ 3864 hci_stack->sco_can_send_now = true; 3865 } 3866 3867 // setup implict sco flow control 3868 conn->sco_tx_ready = 0; 3869 conn->sco_tx_active = 0; 3870 conn->sco_established_ms = btstack_run_loop_get_time_ms(); 3871 3872 #endif 3873 #ifdef HAVE_SCO_TRANSPORT 3874 // configure sco transport 3875 if (hci_stack->sco_transport != NULL){ 3876 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3877 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3878 } 3879 #endif 3880 break; 3881 3882 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3883 handle = little_endian_read_16(packet, 3); 3884 conn = hci_connection_for_handle(handle); 3885 if (!conn) break; 3886 if (!packet[2]){ 3887 const uint8_t * features = &packet[5]; 3888 hci_handle_remote_features_page_0(conn, features); 3889 3890 // read extended features if possible 3891 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3892 && ((conn->remote_supported_features[0] & 2) != 0)) { 3893 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3894 break; 3895 } 3896 } 3897 hci_handle_remote_features_received(conn); 3898 break; 3899 3900 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3901 handle = little_endian_read_16(packet, 3); 3902 conn = hci_connection_for_handle(handle); 3903 if (!conn) break; 3904 // status = ok, page = 1 3905 if (!packet[2]) { 3906 uint8_t page_number = packet[5]; 3907 uint8_t maximum_page_number = packet[6]; 3908 const uint8_t * features = &packet[7]; 3909 bool done = false; 3910 switch (page_number){ 3911 case 1: 3912 hci_handle_remote_features_page_1(conn, features); 3913 if (maximum_page_number >= 2){ 3914 // get Secure Connections (Controller) from Page 2 if available 3915 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3916 } else { 3917 // otherwise, assume SC (Controller) == SC (Host) 3918 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3919 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3920 } 3921 done = true; 3922 } 3923 break; 3924 case 2: 3925 hci_handle_remote_features_page_2(conn, features); 3926 done = true; 3927 break; 3928 default: 3929 break; 3930 } 3931 if (!done) break; 3932 } 3933 hci_handle_remote_features_received(conn); 3934 break; 3935 3936 case HCI_EVENT_LINK_KEY_REQUEST: 3937 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3938 hci_event_link_key_request_get_bd_addr(packet, addr); 3939 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3940 if (!conn) break; 3941 3942 // lookup link key in db if not cached 3943 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3944 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3945 } 3946 3947 // response sent by hci_run() 3948 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3949 #endif 3950 break; 3951 3952 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3953 hci_event_link_key_request_get_bd_addr(packet, addr); 3954 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3955 if (!conn) break; 3956 3957 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3958 3959 // CVE-2020-26555: ignore NULL link key 3960 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3961 if (btstack_is_null(&packet[8], 16)) break; 3962 3963 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3964 // Change Connection Encryption keeps link key type 3965 if (link_key_type != CHANGED_COMBINATION_KEY){ 3966 conn->link_key_type = link_key_type; 3967 } 3968 3969 // cache link key. link keys stored in little-endian format for legacy reasons 3970 memcpy(&conn->link_key, &packet[8], 16); 3971 3972 // only store link key: 3973 // - if bondable enabled 3974 if (hci_stack->bondable == false) break; 3975 // - if security level sufficient 3976 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3977 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3978 break; 3979 } 3980 3981 case HCI_EVENT_PIN_CODE_REQUEST: 3982 hci_event_pin_code_request_get_bd_addr(packet, addr); 3983 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3984 if (!conn) break; 3985 3986 hci_pairing_started(conn, false); 3987 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3988 if (!hci_stack->bondable ){ 3989 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3990 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3991 hci_run(); 3992 return; 3993 } 3994 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3995 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3996 log_info("Level 4 required, but SC not supported -> abort"); 3997 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3998 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3999 hci_run(); 4000 return; 4001 } 4002 break; 4003 4004 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 4005 hci_event_io_capability_response_get_bd_addr(packet, addr); 4006 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4007 if (!conn) break; 4008 4009 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 4010 hci_pairing_started(conn, true); 4011 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 4012 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 4013 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4014 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 4015 #endif 4016 break; 4017 4018 case HCI_EVENT_IO_CAPABILITY_REQUEST: 4019 hci_event_io_capability_response_get_bd_addr(packet, addr); 4020 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4021 if (!conn) break; 4022 4023 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 4024 hci_connection_timestamp(conn); 4025 hci_pairing_started(conn, true); 4026 break; 4027 4028 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4029 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 4030 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 4031 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4032 if (!conn) break; 4033 4034 hci_connection_timestamp(conn); 4035 4036 hci_pairing_started(conn, true); 4037 4038 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 4039 break; 4040 #endif 4041 4042 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 4043 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 4044 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4045 if (!conn) break; 4046 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 4047 if (hci_stack->ssp_auto_accept){ 4048 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 4049 }; 4050 } else { 4051 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 4052 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 4053 // don't forward event to app 4054 hci_run(); 4055 return; 4056 } 4057 break; 4058 4059 case HCI_EVENT_USER_PASSKEY_REQUEST: 4060 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 4061 if (hci_stack->ssp_auto_accept){ 4062 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 4063 }; 4064 break; 4065 4066 case HCI_EVENT_MODE_CHANGE: 4067 handle = hci_event_mode_change_get_handle(packet); 4068 conn = hci_connection_for_handle(handle); 4069 if (!conn) break; 4070 conn->connection_mode = hci_event_mode_change_get_mode(packet); 4071 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 4072 break; 4073 #endif 4074 4075 case HCI_EVENT_ENCRYPTION_CHANGE: 4076 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 4077 handle = hci_event_encryption_change_get_connection_handle(packet); 4078 conn = hci_connection_for_handle(handle); 4079 if (!conn) break; 4080 if (hci_event_encryption_change_get_status(packet) == ERROR_CODE_SUCCESS) { 4081 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 4082 if (encryption_enabled){ 4083 if (hci_is_le_connection(conn)){ 4084 // For LE, we accept connection as encrypted 4085 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 4086 } 4087 #ifdef ENABLE_CLASSIC 4088 else { 4089 4090 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 4091 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 4092 bool connected_uses_aes_ccm = encryption_enabled == 2; 4093 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 4094 #ifdef ENABLE_TESTING_SUPPORT 4095 // The following tests require to reject L2CAP connection as SC has been disabled on the remote 4096 // - GAP/SEC/SEM/BI-31-C 4097 // - GAP/SEC/SEM/BI-32-C 4098 // - GAP/SEC/SEM/BI-33-C 4099 4100 // Our release code (aggressively) disconnects the HCI connection, without a chance to respond to PTS 4101 // To pass the tests, we only downgrade the link key type instead of the more secure disconnect 4102 link_key_type_t new_link_key_type = UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4103 if (conn->link_key_type == AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256){ 4104 new_link_key_type = AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192; 4105 } 4106 log_info("SC during pairing, but only E0 now -> downgrade link key type from %u to %u", 4107 conn->link_key_type, new_link_key_type); 4108 conn->link_key_type = new_link_key_type; 4109 #else 4110 log_info("SC during pairing, but only E0 now -> abort"); 4111 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4112 break; 4113 #endif 4114 } 4115 4116 #ifdef ENABLE_MUTUAL_AUTHENTICATION_FOR_LEGACY_SECURE_CONNECTIONS 4117 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 4118 if (connected_uses_aes_ccm){ 4119 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4120 } 4121 #else 4122 // We consider even Legacy Secure Connections as authenticated as BTstack mandates encryption 4123 // with encryption key size > hci_stack->gap_required_encyrption_key_size 4124 // for all operations that require any security. See BIAS attacks. 4125 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4126 #endif 4127 // validate encryption key size 4128 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 4129 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 4130 // already got encryption key size 4131 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 4132 } else { 4133 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 4134 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 4135 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4136 } else { 4137 // if not, pretend everything is perfect 4138 hci_handle_read_encryption_key_size_complete(conn, 16); 4139 } 4140 } 4141 } 4142 #endif 4143 } else { 4144 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 4145 } 4146 } else { 4147 #ifdef ENABLE_CLASSIC 4148 if (!hci_is_le_connection(conn)){ 4149 uint8_t status = hci_event_encryption_change_get_status(packet); 4150 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 4151 conn->bonding_flags &= ~BONDING_DEDICATED; 4152 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 4153 conn->bonding_status = status; 4154 } 4155 // trigger security update -> level 0 4156 hci_handle_mutual_authentication_completed(conn); 4157 } 4158 #endif 4159 } 4160 4161 break; 4162 4163 #ifdef ENABLE_CLASSIC 4164 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 4165 handle = hci_event_authentication_complete_get_connection_handle(packet); 4166 conn = hci_connection_for_handle(handle); 4167 if (!conn) break; 4168 4169 // clear authentication active flag 4170 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 4171 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 4172 4173 // authenticated only if auth status == 0 4174 if (hci_event_authentication_complete_get_status(packet) == 0){ 4175 // authenticated 4176 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4177 4178 // If not already encrypted, start encryption 4179 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 4180 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 4181 break; 4182 } 4183 } 4184 4185 // emit updated security level (will be 0 if not authenticated) 4186 hci_handle_mutual_authentication_completed(conn); 4187 break; 4188 4189 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 4190 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 4191 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4192 if (!conn) break; 4193 4194 // treat successfully paired connection as authenticated 4195 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 4196 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 4197 } 4198 4199 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 4200 break; 4201 #endif 4202 4203 // HCI_EVENT_DISCONNECTION_COMPLETE 4204 // has been split, to first notify stack before shutting connection down 4205 // see end of function, too. 4206 case HCI_EVENT_DISCONNECTION_COMPLETE: 4207 if (packet[2]) break; // status != 0 4208 handle = little_endian_read_16(packet, 3); 4209 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 4210 if (hci_stack->acl_fragmentation_total_size > 0u) { 4211 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4212 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 4213 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 4214 hci_stack->acl_fragmentation_total_size = 0; 4215 hci_stack->acl_fragmentation_pos = 0; 4216 if (release_buffer){ 4217 hci_release_packet_buffer(); 4218 } 4219 } 4220 } 4221 4222 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4223 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 4224 if (hci_stack->iso_fragmentation_total_size > 0u) { 4225 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 4226 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 4227 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 4228 hci_stack->iso_fragmentation_total_size = 0; 4229 hci_stack->iso_fragmentation_pos = 0; 4230 if (release_buffer){ 4231 hci_release_packet_buffer(); 4232 } 4233 } 4234 } 4235 4236 // finalize iso stream for CIS handle 4237 iso_stream = hci_iso_stream_for_con_handle(handle); 4238 if (iso_stream != NULL){ 4239 hci_iso_stream_finalize(iso_stream); 4240 break; 4241 } 4242 4243 // finalize iso stream(s) for ACL handle 4244 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4245 while (btstack_linked_list_iterator_has_next(&it)){ 4246 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4247 if (iso_stream->acl_handle == handle ) { 4248 hci_iso_stream_finalize(iso_stream); 4249 } 4250 } 4251 #endif 4252 4253 #if defined(ENABLE_BLE) && defined (ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND) 4254 if ((handle != HCI_CON_HANDLE_INVALID) && (handle == hci_stack->hci_command_con_handle)){ 4255 // we did not receive a HCI Command Complete or HCI Command Status event for the disconnected connection 4256 // if needed, we could also track the hci command opcode and simulate a hci command complete with status 4257 // but the connection has failed anyway, so for now, we only set the num hci commands back to 1 4258 log_info("Disconnect for conn handle 0x%04x in pending HCI command, assume command failed", handle); 4259 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4260 hci_stack->num_cmd_packets = 1; 4261 } 4262 #endif 4263 4264 conn = hci_connection_for_handle(handle); 4265 if (!conn) break; 4266 #ifdef ENABLE_CLASSIC 4267 // pairing failed if it was ongoing 4268 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4269 #endif 4270 4271 // emit dedicatd bonding event 4272 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 4273 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 4274 } 4275 4276 // mark connection for shutdown, stop timers, reset state 4277 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 4278 hci_connection_stop_timer(conn); 4279 hci_connection_init(conn); 4280 4281 #ifdef ENABLE_BLE 4282 #ifdef ENABLE_LE_PERIPHERAL 4283 // re-enable advertisements for le connections if active 4284 if (hci_is_le_connection(conn)){ 4285 hci_update_advertisements_enabled_for_current_roles(); 4286 } 4287 #endif 4288 #endif 4289 break; 4290 4291 case HCI_EVENT_HARDWARE_ERROR: 4292 log_error("Hardware Error: 0x%02x", packet[2]); 4293 if (hci_stack->hardware_error_callback){ 4294 (*hci_stack->hardware_error_callback)(packet[2]); 4295 } else { 4296 // if no special requests, just reboot stack 4297 hci_power_control_off(); 4298 hci_power_control_on(); 4299 } 4300 break; 4301 4302 #ifdef ENABLE_CLASSIC 4303 case HCI_EVENT_ROLE_CHANGE: 4304 if (packet[2]) break; // status != 0 4305 reverse_bd_addr(&packet[3], addr); 4306 addr_type = BD_ADDR_TYPE_ACL; 4307 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 4308 if (!conn) break; 4309 conn->role = (hci_role_t) packet[9]; 4310 break; 4311 #endif 4312 4313 case HCI_EVENT_TRANSPORT_PACKET_SENT: 4314 // release packet buffer only for asynchronous transport and if there are not further fragments 4315 if (hci_transport_synchronous()) { 4316 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 4317 return; // instead of break: to avoid re-entering hci_run() 4318 } 4319 hci_stack->acl_fragmentation_tx_active = 0; 4320 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4321 hci_stack->iso_fragmentation_tx_active = 0; 4322 if (hci_stack->iso_fragmentation_total_size) break; 4323 #endif 4324 if (hci_stack->acl_fragmentation_total_size) break; 4325 4326 // release packet buffer without HCI_EVENT_TRANSPORT_PACKET_SENT (as it will be later) 4327 btstack_assert(hci_stack->hci_packet_buffer_reserved); 4328 hci_stack->hci_packet_buffer_reserved = false; 4329 4330 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4331 hci_iso_notify_can_send_now(); 4332 #endif 4333 // L2CAP receives this event via the hci_emit_event below 4334 4335 #ifdef ENABLE_CLASSIC 4336 // For SCO, we do the can_send_now_check here 4337 hci_notify_if_sco_can_send_now(); 4338 #endif 4339 break; 4340 4341 #ifdef ENABLE_CLASSIC 4342 case HCI_EVENT_SCO_CAN_SEND_NOW: 4343 // For SCO, we do the can_send_now_check here 4344 hci_stack->sco_can_send_now = true; 4345 hci_notify_if_sco_can_send_now(); 4346 return; 4347 4348 // explode inquriy results for easier consumption 4349 case HCI_EVENT_INQUIRY_RESULT: 4350 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4351 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4352 gap_inquiry_explode(packet, size); 4353 break; 4354 #endif 4355 4356 #ifdef ENABLE_BLE 4357 case HCI_EVENT_LE_META: 4358 switch (packet[2]){ 4359 #ifdef ENABLE_LE_CENTRAL 4360 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 4361 if (!hci_stack->le_scanning_enabled) break; 4362 le_handle_advertisement_report(packet, size); 4363 break; 4364 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4365 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 4366 if (!hci_stack->le_scanning_enabled) break; 4367 le_handle_extended_advertisement_report(packet, size); 4368 break; 4369 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 4370 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 4371 hci_stack->le_periodic_sync_state = LE_CONNECTING_IDLE; 4372 break; 4373 case HCI_SUBEVENT_LE_ADVERTISING_SET_TERMINATED: 4374 advertising_handle = hci_subevent_le_advertising_set_terminated_get_advertising_handle(packet); 4375 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4376 while (btstack_linked_list_iterator_has_next(&it)) { 4377 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 4378 if (advertising_set->advertising_handle == advertising_handle){ 4379 advertising_set->state &= ~(LE_ADVERTISEMENT_STATE_ACTIVE | LE_ADVERTISEMENT_STATE_ENABLED); 4380 } 4381 } 4382 break; 4383 #endif 4384 #endif 4385 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 4386 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V1: 4387 case HCI_SUBEVENT_LE_ENHANCED_CONNECTION_COMPLETE_V2: 4388 hci_handle_le_connection_complete_event(packet); 4389 break; 4390 4391 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 4392 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 4393 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 4394 conn = hci_connection_for_handle(handle); 4395 if (!conn) break; 4396 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 4397 break; 4398 4399 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 4400 // connection 4401 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 4402 conn = hci_connection_for_handle(handle); 4403 if (conn) { 4404 // read arguments 4405 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 4406 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 4407 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 4408 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 4409 4410 // validate against current connection parameter range 4411 le_connection_parameter_range_t existing_range; 4412 gap_get_connection_parameter_range(&existing_range); 4413 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 4414 if (update_parameter){ 4415 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 4416 conn->le_conn_interval_min = le_conn_interval_min; 4417 conn->le_conn_interval_max = le_conn_interval_max; 4418 conn->le_conn_latency = le_conn_latency; 4419 conn->le_supervision_timeout = le_supervision_timeout; 4420 } else { 4421 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 4422 } 4423 } 4424 break; 4425 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 4426 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 4427 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 4428 conn = hci_connection_for_handle(handle); 4429 if (conn) { 4430 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 4431 } 4432 break; 4433 #endif 4434 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4435 case HCI_SUBEVENT_LE_CIS_REQUEST: 4436 // incoming CIS request, allocate iso stream object and cache metadata 4437 iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS, HCI_ISO_STREAM_W4_USER, 4438 hci_subevent_le_cis_request_get_cig_id(packet), 4439 hci_subevent_le_cis_request_get_cis_id(packet)); 4440 // if there's no memory, gap_cis_accept/gap_cis_reject will fail 4441 if (iso_stream != NULL){ 4442 iso_stream->cis_handle = hci_subevent_le_cis_request_get_cis_connection_handle(packet); 4443 iso_stream->acl_handle = hci_subevent_le_cis_request_get_acl_connection_handle(packet); 4444 } 4445 break; 4446 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 4447 if (hci_stack->iso_active_operation_type == HCI_ISO_TYPE_CIS){ 4448 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 4449 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 4450 iso_stream = hci_iso_stream_for_con_handle(handle); 4451 btstack_assert(iso_stream != NULL); 4452 // track connection info 4453 iso_stream->number_of_subevents = hci_subevent_le_cis_established_get_nse(packet); 4454 iso_stream->burst_number_c_to_p = hci_subevent_le_cis_established_get_bn_c_to_p(packet); 4455 iso_stream->burst_number_p_to_c = hci_subevent_le_cis_established_get_bn_p_to_c(packet); 4456 iso_stream->flush_timeout_c_to_p = hci_subevent_le_cis_established_get_ft_c_to_p(packet); 4457 iso_stream->flush_timeout_p_to_c = hci_subevent_le_cis_established_get_ft_p_to_c(packet); 4458 iso_stream->max_sdu_c_to_p = hci_subevent_le_cis_established_get_max_pdu_c_to_p(packet); 4459 iso_stream->max_sdu_p_to_c = hci_subevent_le_cis_established_get_max_pdu_p_to_c(packet); 4460 iso_stream->iso_interval_1250us = hci_subevent_le_cis_established_get_iso_interval(packet); 4461 if (hci_stack->iso_active_operation_group_id == HCI_ISO_GROUP_ID_SINGLE_CIS){ 4462 // CIS Accept by Peripheral 4463 if (status == ERROR_CODE_SUCCESS){ 4464 if (iso_stream->max_sdu_p_to_c > 0){ 4465 // we're peripheral and we will send data 4466 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT; 4467 } else { 4468 // we're peripheral and we will only receive data 4469 iso_stream->state = HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT; 4470 } 4471 } else { 4472 hci_cis_handle_created(iso_stream, status); 4473 } 4474 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4475 } else { 4476 // CIG Setup by Central 4477 le_audio_cig_t * cig = hci_cig_for_id(hci_stack->iso_active_operation_group_id); 4478 btstack_assert(cig != NULL); 4479 // update iso stream state 4480 if (status == ERROR_CODE_SUCCESS){ 4481 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4482 } else { 4483 iso_stream->state = HCI_ISO_STREAM_STATE_IDLE; 4484 } 4485 // update cig state 4486 uint8_t i; 4487 for (i=0;i<cig->num_cis;i++){ 4488 if (cig->cis_con_handles[i] == handle){ 4489 cig->cis_setup_active[i] = false; 4490 if (status == ERROR_CODE_SUCCESS){ 4491 cig->cis_established[i] = true; 4492 } else { 4493 hci_cis_handle_created(iso_stream, status); 4494 } 4495 } 4496 } 4497 4498 // trigger iso path setup if complete 4499 bool cis_setup_active = false; 4500 for (i=0;i<cig->num_cis;i++){ 4501 cis_setup_active |= cig->cis_setup_active[i]; 4502 } 4503 if (cis_setup_active == false){ 4504 cig->state_vars.next_cis = 0; 4505 cig->state = LE_AUDIO_CIG_STATE_SETUP_ISO_PATH; 4506 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4507 } 4508 } 4509 } 4510 break; 4511 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 4512 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4513 big = hci_big_for_handle(packet[4]); 4514 if (big != NULL){ 4515 uint8_t status = packet[3]; 4516 if (status == ERROR_CODE_SUCCESS){ 4517 // store bis_con_handles and trigger iso path setup 4518 uint8_t num_bis = btstack_min(big->num_bis, packet[20]); 4519 uint8_t i; 4520 for (i=0;i<num_bis;i++){ 4521 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 4522 big->bis_con_handles[i] = bis_handle; 4523 // assign bis handle 4524 btstack_linked_list_iterator_t it; 4525 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4526 while (btstack_linked_list_iterator_has_next(&it)){ 4527 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4528 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4529 (iso_stream->group_id == big->big_handle)){ 4530 iso_stream->cis_handle = bis_handle; 4531 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4532 break; 4533 } 4534 } 4535 } 4536 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4537 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4538 big->state_vars.next_bis = 0; 4539 } 4540 } else { 4541 // create BIG failed or has been stopped by us 4542 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big->big_handle); 4543 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4544 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 4545 hci_emit_big_created(big, status); 4546 } else { 4547 hci_emit_big_terminated(big); 4548 } 4549 } 4550 } 4551 break; 4552 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 4553 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4554 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 4555 if (big != NULL){ 4556 // finalize associated ISO streams 4557 btstack_linked_list_iterator_t it; 4558 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4559 while (btstack_linked_list_iterator_has_next(&it)){ 4560 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4561 if (iso_stream->group_id == big->big_handle){ 4562 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->group_id, iso_stream->cis_handle); 4563 btstack_linked_list_iterator_remove(&it); 4564 btstack_memory_hci_iso_stream_free(iso_stream); 4565 } 4566 } 4567 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 4568 switch (big->state){ 4569 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 4570 hci_emit_big_created(big, big->state_vars.status); 4571 break; 4572 default: 4573 hci_emit_big_terminated(big); 4574 break; 4575 } 4576 } 4577 break; 4578 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 4579 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4580 big_sync = hci_big_sync_for_handle(packet[4]); 4581 if (big_sync != NULL){ 4582 uint8_t status = packet[3]; 4583 uint8_t big_handle = packet[4]; 4584 if (status == ERROR_CODE_SUCCESS){ 4585 // store bis_con_handles and trigger iso path setup 4586 uint8_t num_bis = btstack_min(big_sync->num_bis, packet[16]); 4587 uint8_t i; 4588 for (i=0;i<num_bis;i++){ 4589 hci_con_handle_t bis_handle = little_endian_read_16(packet, 17 + (2 * i)); 4590 big_sync->bis_con_handles[i] = bis_handle; 4591 // setup iso_stream_t 4592 btstack_linked_list_iterator_t it; 4593 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 4594 while (btstack_linked_list_iterator_has_next(&it)){ 4595 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 4596 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 4597 (iso_stream->group_id == big_sync->big_handle)){ 4598 iso_stream->cis_handle = bis_handle; 4599 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 4600 break; 4601 } 4602 } 4603 } 4604 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4605 // trigger iso path setup 4606 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 4607 big_sync->state_vars.next_bis = 0; 4608 } 4609 } else { 4610 // create BIG Sync failed or has been stopped by us 4611 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4612 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4613 hci_emit_big_sync_created(big_sync, status); 4614 } else { 4615 hci_emit_big_sync_stopped(big_handle); 4616 } 4617 } 4618 } 4619 break; 4620 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4621 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4622 big_sync = hci_big_sync_for_handle(packet[4]); 4623 if (big_sync != NULL){ 4624 uint8_t big_handle = packet[4]; 4625 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4626 hci_emit_big_sync_stopped(big_handle); 4627 } 4628 break; 4629 #endif 4630 default: 4631 break; 4632 } 4633 break; 4634 #endif 4635 case HCI_EVENT_VENDOR_SPECIFIC: 4636 // Vendor specific commands often create vendor specific event instead of num completed packets 4637 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4638 switch (hci_stack->manufacturer){ 4639 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4640 hci_stack->num_cmd_packets = 1; 4641 break; 4642 default: 4643 break; 4644 } 4645 break; 4646 default: 4647 break; 4648 } 4649 4650 handle_event_for_current_stack_state(packet, size); 4651 4652 // notify upper stack 4653 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4654 4655 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4656 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4657 handle = little_endian_read_16(packet, 3); 4658 hci_connection_t * aConn = hci_connection_for_handle(handle); 4659 // discard connection if app did not trigger a reconnect in the event handler 4660 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4661 hci_shutdown_connection(aConn); 4662 } 4663 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4664 hci_controller_dump_packets(); 4665 #endif 4666 } 4667 4668 // execute main loop 4669 hci_run(); 4670 } 4671 4672 #ifdef ENABLE_CLASSIC 4673 4674 static void sco_handler(uint8_t * packet, uint16_t size){ 4675 // lookup connection struct 4676 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4677 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4678 if (!conn) return; 4679 4680 #ifdef ENABLE_SCO_OVER_HCI 4681 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4682 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4683 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4684 packet[2] = 0x3c; 4685 memmove(&packet[3], &packet[23], 63); 4686 size = 63; 4687 } 4688 } 4689 4690 if (hci_have_usb_transport()){ 4691 // Nothing to do 4692 } else { 4693 // log_debug("sco flow %u, handle 0x%04x, packets sent %u, bytes send %u", hci_stack->synchronous_flow_control_enabled, (int) con_handle, conn->num_packets_sent, conn->num_sco_bytes_sent); 4694 if (hci_stack->synchronous_flow_control_enabled == 0){ 4695 // ignore received SCO packets for the first 10 ms, then allow for max two HCI_SCO_2EV3_SIZE packets 4696 uint8_t max_sco_packets = (uint8_t) btstack_min(2 * HCI_SCO_2EV3_SIZE / conn->sco_payload_length, hci_stack->sco_packets_total_num); 4697 if (conn->sco_tx_active == 0){ 4698 if (btstack_time_delta(btstack_run_loop_get_time_ms(), conn->sco_established_ms) > 10){ 4699 conn->sco_tx_active = 1; 4700 conn->sco_tx_ready = max_sco_packets; 4701 log_info("Start SCO sending, %u packets", conn->sco_tx_ready); 4702 hci_notify_if_sco_can_send_now(); 4703 } 4704 } else { 4705 if (conn->sco_tx_ready < max_sco_packets){ 4706 conn->sco_tx_ready++; 4707 } 4708 hci_notify_if_sco_can_send_now(); 4709 } 4710 } 4711 } 4712 #endif 4713 4714 // deliver to app 4715 if (hci_stack->sco_packet_handler) { 4716 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4717 } 4718 4719 #ifdef HAVE_SCO_TRANSPORT 4720 // We can send one packet for each received packet 4721 conn->sco_tx_ready++; 4722 hci_notify_if_sco_can_send_now(); 4723 #endif 4724 4725 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4726 conn->num_packets_completed++; 4727 hci_stack->host_completed_packets = 1; 4728 hci_run(); 4729 #endif 4730 } 4731 #endif 4732 4733 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4734 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4735 // propagate ISO packets received as ACL 4736 hci_iso_stream_t * iso_stream = NULL; 4737 if ((packet_type == HCI_ACL_DATA_PACKET) && (size >= HCI_ACL_HEADER_SIZE)){ 4738 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 4739 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4740 if (iso_stream != NULL){ 4741 packet_type = HCI_ISO_DATA_PACKET; 4742 } 4743 } 4744 #endif 4745 4746 hci_dump_packet(packet_type, 1, packet, size); 4747 switch (packet_type) { 4748 case HCI_EVENT_PACKET: 4749 event_handler(packet, size); 4750 break; 4751 case HCI_ACL_DATA_PACKET: 4752 acl_handler(packet, size); 4753 break; 4754 #ifdef ENABLE_CLASSIC 4755 case HCI_SCO_DATA_PACKET: 4756 sco_handler(packet, size); 4757 break; 4758 #endif 4759 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4760 case HCI_ISO_DATA_PACKET: 4761 if ((iso_stream == NULL) && (size >= HCI_ISO_HEADER_SIZE)){ 4762 hci_con_handle_t con_handle = READ_ISO_CONNECTION_HANDLE(packet); 4763 iso_stream = hci_iso_stream_for_con_handle(con_handle); 4764 } 4765 hci_iso_packet_handler(iso_stream, packet, size); 4766 break; 4767 #endif 4768 default: 4769 break; 4770 } 4771 } 4772 4773 /** 4774 * @brief Add event packet handler. 4775 */ 4776 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4777 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4778 } 4779 4780 /** 4781 * @brief Remove event packet handler. 4782 */ 4783 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4784 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4785 } 4786 4787 /** Register HCI packet handlers */ 4788 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4789 hci_stack->acl_packet_handler = handler; 4790 } 4791 4792 #ifdef ENABLE_CLASSIC 4793 /** 4794 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4795 */ 4796 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4797 hci_stack->sco_packet_handler = handler; 4798 } 4799 #endif 4800 4801 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4802 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4803 hci_stack->iso_packet_handler = handler; 4804 } 4805 #endif 4806 4807 static void hci_state_reset(void){ 4808 // no connections yet 4809 hci_stack->connections = NULL; 4810 4811 // keep discoverable/connectable as this has been requested by the client(s) 4812 // hci_stack->discoverable = 0; 4813 // hci_stack->connectable = 0; 4814 // hci_stack->bondable = 1; 4815 // hci_stack->own_addr_type = 0; 4816 4817 // buffer is free 4818 hci_stack->hci_packet_buffer_reserved = false; 4819 4820 // no pending cmds 4821 hci_stack->decline_reason = 0; 4822 4823 hci_stack->secure_connections_active = false; 4824 4825 #ifdef ENABLE_CLASSIC 4826 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4827 4828 hci_stack->gap_tasks_classic = 4829 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4830 GAP_TASK_SET_CLASS_OF_DEVICE | 4831 GAP_TASK_SET_LOCAL_NAME | 4832 GAP_TASK_SET_EIR_DATA | 4833 GAP_TASK_WRITE_SCAN_ENABLE | 4834 GAP_TASK_WRITE_PAGE_TIMEOUT; 4835 #endif 4836 4837 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4838 hci_stack->classic_read_local_oob_data = false; 4839 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4840 #endif 4841 4842 // LE 4843 #ifdef ENABLE_BLE 4844 memset(hci_stack->le_random_address, 0, 6); 4845 hci_stack->le_random_address_set = 0; 4846 #endif 4847 #ifdef ENABLE_LE_CENTRAL 4848 hci_stack->le_scanning_active = false; 4849 hci_stack->le_scanning_param_update = true; 4850 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4851 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4852 hci_stack->le_whitelist_capacity = 0; 4853 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4854 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4855 #endif 4856 #endif 4857 #ifdef ENABLE_LE_PERIPHERAL 4858 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4859 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4860 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4861 } 4862 if (hci_stack->le_advertisements_data != NULL){ 4863 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4864 } 4865 #endif 4866 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4867 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION; 4868 #endif 4869 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4870 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_INVALID; 4871 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_INVALID; 4872 #endif 4873 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 4874 hci_stack->hci_command_con_handle = HCI_CON_HANDLE_INVALID; 4875 #endif 4876 } 4877 4878 #ifdef ENABLE_CLASSIC 4879 /** 4880 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4881 */ 4882 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4883 // store and open remote device db 4884 hci_stack->link_key_db = link_key_db; 4885 if (hci_stack->link_key_db) { 4886 hci_stack->link_key_db->open(); 4887 } 4888 } 4889 #endif 4890 4891 void hci_init(const hci_transport_t *transport, const void *config){ 4892 4893 #ifdef HAVE_MALLOC 4894 if (!hci_stack) { 4895 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4896 } 4897 btstack_assert(hci_stack != NULL); 4898 #else 4899 hci_stack = &hci_stack_static; 4900 #endif 4901 memset(hci_stack, 0, sizeof(hci_stack_t)); 4902 4903 // reference to use transport layer implementation 4904 hci_stack->hci_transport = transport; 4905 4906 // reference to used config 4907 hci_stack->config = config; 4908 4909 // setup pointer for outgoing packet buffer 4910 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4911 4912 // max acl payload size defined in config.h 4913 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4914 4915 // register packet handlers with transport 4916 transport->register_packet_handler(&packet_handler); 4917 4918 hci_stack->state = HCI_STATE_OFF; 4919 4920 // class of device 4921 hci_stack->class_of_device = 0x007a020c; // Smartphone 4922 4923 // bondable by default 4924 hci_stack->bondable = 1; 4925 4926 #ifdef ENABLE_CLASSIC 4927 // classic name 4928 hci_stack->local_name = default_classic_name; 4929 4930 // Master slave policy 4931 hci_stack->master_slave_policy = 1; 4932 4933 // Allow Role Switch 4934 hci_stack->allow_role_switch = 1; 4935 4936 // Default / minimum security level = 2 4937 hci_stack->gap_security_level = LEVEL_2; 4938 4939 // Default Security Mode 4 4940 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4941 4942 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4943 hci_stack->gap_required_encyrption_key_size = 7; 4944 4945 // Link Supervision Timeout 4946 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4947 4948 // Page Timeout 4949 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4950 4951 // All ACL packet types are enabledh 4952 hci_stack->enabled_packet_types_acl = ACL_PACKET_TYPES_ALL; 4953 #endif 4954 4955 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4956 hci_stack->ssp_enable = 1; 4957 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4958 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4959 hci_stack->ssp_auto_accept = 1; 4960 4961 // Secure Connections: enable (requires support from Controller) 4962 hci_stack->secure_connections_enable = true; 4963 4964 // voice setting - signed 16 bit pcm data with CVSD over the air 4965 hci_stack->sco_voice_setting = 0x60; 4966 4967 #ifdef ENABLE_BLE 4968 hci_stack->le_connection_scan_interval = 0x0060; // 60 ms 4969 hci_stack->le_connection_scan_window = 0x0030; // 30 ms 4970 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4971 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4972 hci_stack->le_connection_latency = 4; // 4 4973 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4974 hci_stack->le_minimum_ce_length = 0; // 0 ms 4975 hci_stack->le_maximum_ce_length = 0; // 0 ms 4976 #endif 4977 4978 #ifdef ENABLE_LE_CENTRAL 4979 hci_stack->le_connection_phys = 0x01; // LE 1M PHY 4980 4981 // default LE Scanning 4982 hci_stack->le_scan_type = 0x01; // active 4983 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4984 hci_stack->le_scan_window = 0x30; // 30 ms 4985 hci_stack->le_scan_phys = 0x01; // LE 1M PHY 4986 #endif 4987 4988 #ifdef ENABLE_LE_PERIPHERAL 4989 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4990 4991 // default advertising parameters from Core v5.4 -- needed to use random address without prior adv setup 4992 hci_stack->le_advertisements_interval_min = 0x0800; 4993 hci_stack->le_advertisements_interval_max = 0x0800; 4994 hci_stack->le_advertisements_type = 0; 4995 hci_stack->le_own_addr_type = BD_ADDR_TYPE_LE_PUBLIC; 4996 hci_stack->le_advertisements_direct_address_type = BD_ADDR_TYPE_LE_PUBLIC; 4997 hci_stack->le_advertisements_channel_map = 0x07; 4998 hci_stack->le_advertisements_filter_policy = 0; 4999 #endif 5000 5001 // connection parameter range used to answer connection parameter update requests in l2cap 5002 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 5003 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 5004 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 5005 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 5006 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 5007 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 5008 5009 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5010 hci_stack->iso_packets_to_queue = 1; 5011 #endif 5012 5013 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5014 hci_stack->le_privacy_mode = LE_PRIVACY_MODE_DEVICE; 5015 #endif 5016 5017 hci_state_reset(); 5018 } 5019 5020 void hci_deinit(void){ 5021 btstack_run_loop_remove_timer(&hci_stack->timeout); 5022 #ifdef HAVE_MALLOC 5023 if (hci_stack) { 5024 free(hci_stack); 5025 } 5026 #endif 5027 hci_stack = NULL; 5028 5029 #ifdef ENABLE_CLASSIC 5030 disable_l2cap_timeouts = 0; 5031 #endif 5032 } 5033 5034 /** 5035 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 5036 */ 5037 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 5038 hci_stack->chipset = chipset_driver; 5039 5040 // reset chipset driver - init is also called on power_up 5041 if (hci_stack->chipset && hci_stack->chipset->init){ 5042 hci_stack->chipset->init(hci_stack->config); 5043 } 5044 } 5045 5046 void hci_enable_custom_pre_init(void){ 5047 hci_stack->chipset_pre_init = true; 5048 } 5049 5050 /** 5051 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 5052 */ 5053 void hci_set_control(const btstack_control_t *hardware_control){ 5054 // references to used control implementation 5055 hci_stack->control = hardware_control; 5056 // init with transport config 5057 hardware_control->init(hci_stack->config); 5058 } 5059 5060 static void hci_discard_connections(void){ 5061 btstack_linked_list_iterator_t it; 5062 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 5063 while (btstack_linked_list_iterator_has_next(&it)){ 5064 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 5065 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 5066 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 5067 hci_shutdown_connection(connection); 5068 } 5069 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5070 while (hci_stack->iso_streams != NULL){ 5071 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 5072 } 5073 #endif 5074 } 5075 5076 void hci_close(void){ 5077 5078 #ifdef ENABLE_CLASSIC 5079 // close remote device db 5080 if (hci_stack->link_key_db) { 5081 hci_stack->link_key_db->close(); 5082 } 5083 #endif 5084 5085 hci_discard_connections(); 5086 5087 hci_power_control(HCI_POWER_OFF); 5088 5089 #ifdef HAVE_MALLOC 5090 free(hci_stack); 5091 #endif 5092 hci_stack = NULL; 5093 } 5094 5095 #ifdef HAVE_SCO_TRANSPORT 5096 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 5097 hci_stack->sco_transport = sco_transport; 5098 sco_transport->register_packet_handler(&packet_handler); 5099 } 5100 #endif 5101 5102 #ifdef ENABLE_CLASSIC 5103 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 5104 // validate ranage and set 5105 if (encryption_key_size < 7) return; 5106 if (encryption_key_size > 16) return; 5107 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 5108 } 5109 5110 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 5111 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 5112 hci_stack->gap_security_mode = security_mode; 5113 return ERROR_CODE_SUCCESS; 5114 } else { 5115 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 5116 } 5117 } 5118 5119 gap_security_mode_t gap_get_security_mode(void){ 5120 return hci_stack->gap_security_mode; 5121 } 5122 5123 void gap_set_security_level(gap_security_level_t security_level){ 5124 hci_stack->gap_security_level = security_level; 5125 } 5126 5127 gap_security_level_t gap_get_security_level(void){ 5128 if (hci_stack->gap_secure_connections_only_mode){ 5129 return LEVEL_4; 5130 } 5131 return hci_stack->gap_security_level; 5132 } 5133 5134 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 5135 hci_stack->gap_minimal_service_security_level = security_level; 5136 } 5137 5138 void gap_set_secure_connections_only_mode(bool enable){ 5139 hci_stack->gap_secure_connections_only_mode = enable; 5140 } 5141 5142 bool gap_get_secure_connections_only_mode(void){ 5143 return hci_stack->gap_secure_connections_only_mode; 5144 } 5145 #endif 5146 5147 #ifdef ENABLE_CLASSIC 5148 void gap_set_class_of_device(uint32_t class_of_device){ 5149 hci_stack->class_of_device = class_of_device; 5150 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 5151 hci_run(); 5152 } 5153 5154 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 5155 hci_stack->default_link_policy_settings = default_link_policy_settings; 5156 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 5157 hci_run(); 5158 } 5159 5160 void gap_set_allow_role_switch(bool allow_role_switch){ 5161 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 5162 } 5163 5164 uint8_t hci_get_allow_role_switch(void){ 5165 return hci_stack->allow_role_switch; 5166 } 5167 5168 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 5169 hci_stack->link_supervision_timeout = link_supervision_timeout; 5170 } 5171 5172 void gap_enable_link_watchdog(uint16_t timeout_ms){ 5173 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 5174 } 5175 5176 uint16_t hci_automatic_flush_timeout(void){ 5177 return hci_stack->automatic_flush_timeout; 5178 } 5179 5180 void hci_disable_l2cap_timeout_check(void){ 5181 disable_l2cap_timeouts = 1; 5182 } 5183 #endif 5184 5185 #ifndef HAVE_HOST_CONTROLLER_API 5186 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 5187 void hci_set_bd_addr(bd_addr_t addr){ 5188 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 5189 hci_stack->custom_bd_addr_set = 1; 5190 } 5191 #endif 5192 5193 // State-Module-Driver overview 5194 // state module low-level 5195 // HCI_STATE_OFF off close 5196 // HCI_STATE_INITIALIZING, on open 5197 // HCI_STATE_WORKING, on open 5198 // HCI_STATE_HALTING, on open 5199 // HCI_STATE_SLEEPING, off/sleep close 5200 // HCI_STATE_FALLING_ASLEEP on open 5201 5202 static int hci_power_control_on(void){ 5203 5204 // power on 5205 int err = 0; 5206 if (hci_stack->control && hci_stack->control->on){ 5207 err = (*hci_stack->control->on)(); 5208 } 5209 if (err){ 5210 log_error( "POWER_ON failed"); 5211 hci_emit_hci_open_failed(); 5212 return err; 5213 } 5214 5215 // int chipset driver 5216 if (hci_stack->chipset && hci_stack->chipset->init){ 5217 hci_stack->chipset->init(hci_stack->config); 5218 } 5219 5220 // init transport 5221 if (hci_stack->hci_transport->init){ 5222 hci_stack->hci_transport->init(hci_stack->config); 5223 } 5224 5225 // open transport 5226 err = hci_stack->hci_transport->open(); 5227 if (err){ 5228 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5229 if (hci_stack->control && hci_stack->control->off){ 5230 (*hci_stack->control->off)(); 5231 } 5232 hci_emit_hci_open_failed(); 5233 return err; 5234 } 5235 return 0; 5236 } 5237 5238 static void hci_power_control_off(void){ 5239 5240 log_info("hci_power_control_off"); 5241 5242 // close low-level device 5243 hci_stack->hci_transport->close(); 5244 5245 log_info("hci_power_control_off - hci_transport closed"); 5246 5247 // power off 5248 if (hci_stack->control && hci_stack->control->off){ 5249 (*hci_stack->control->off)(); 5250 } 5251 5252 log_info("hci_power_control_off - control closed"); 5253 5254 hci_stack->state = HCI_STATE_OFF; 5255 } 5256 5257 static void hci_power_control_sleep(void){ 5258 5259 log_info("hci_power_control_sleep"); 5260 5261 #if 0 5262 // don't close serial port during sleep 5263 5264 // close low-level device 5265 hci_stack->hci_transport->close(hci_stack->config); 5266 #endif 5267 5268 // sleep mode 5269 if (hci_stack->control && hci_stack->control->sleep){ 5270 (*hci_stack->control->sleep)(); 5271 } 5272 5273 hci_stack->state = HCI_STATE_SLEEPING; 5274 } 5275 5276 static int hci_power_control_wake(void){ 5277 5278 log_info("hci_power_control_wake"); 5279 5280 // wake on 5281 if (hci_stack->control && hci_stack->control->wake){ 5282 (*hci_stack->control->wake)(); 5283 } 5284 5285 #if 0 5286 // open low-level device 5287 int err = hci_stack->hci_transport->open(hci_stack->config); 5288 if (err){ 5289 log_error( "HCI_INIT failed, turning Bluetooth off again"); 5290 if (hci_stack->control && hci_stack->control->off){ 5291 (*hci_stack->control->off)(); 5292 } 5293 hci_emit_hci_open_failed(); 5294 return err; 5295 } 5296 #endif 5297 5298 return 0; 5299 } 5300 5301 static void hci_power_enter_initializing_state(void){ 5302 // set up state machine 5303 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 5304 hci_stack->hci_packet_buffer_reserved = false; 5305 hci_stack->state = HCI_STATE_INITIALIZING; 5306 5307 #ifndef HAVE_HOST_CONTROLLER_API 5308 if (hci_stack->chipset_pre_init) { 5309 hci_stack->substate = HCI_INIT_CUSTOM_PRE_INIT; 5310 } else 5311 #endif 5312 { 5313 hci_stack->substate = HCI_INIT_SEND_RESET; 5314 } 5315 } 5316 5317 static void hci_power_enter_halting_state(void){ 5318 #ifdef ENABLE_BLE 5319 // drop entries scheduled for removal, mark others for re-adding 5320 btstack_linked_list_iterator_t it; 5321 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5322 while (btstack_linked_list_iterator_has_next(&it)){ 5323 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5324 if ((entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)) == LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5325 btstack_linked_list_iterator_remove(&it); 5326 btstack_memory_whitelist_entry_free(entry); 5327 } else { 5328 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5329 } 5330 } 5331 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5332 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 5333 const uint8_t mask = LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5334 while (btstack_linked_list_iterator_has_next(&it)){ 5335 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 5336 if ((entry->state & mask) == LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER) { 5337 btstack_linked_list_iterator_remove(&it); 5338 btstack_memory_periodic_advertiser_list_entry_free(entry); 5339 } else { 5340 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5341 continue; 5342 } 5343 } 5344 #endif 5345 #endif 5346 // see hci_run 5347 hci_stack->state = HCI_STATE_HALTING; 5348 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 5349 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 5350 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 5351 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5352 btstack_run_loop_add_timer(&hci_stack->timeout); 5353 } 5354 5355 // returns error 5356 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 5357 int err; 5358 switch (power_mode){ 5359 case HCI_POWER_ON: 5360 err = hci_power_control_on(); 5361 if (err != 0) { 5362 log_error("hci_power_control_on() error %d", err); 5363 return err; 5364 } 5365 hci_power_enter_initializing_state(); 5366 break; 5367 case HCI_POWER_OFF: 5368 // do nothing 5369 break; 5370 case HCI_POWER_SLEEP: 5371 // do nothing (with SLEEP == OFF) 5372 break; 5373 default: 5374 btstack_assert(false); 5375 break; 5376 } 5377 return ERROR_CODE_SUCCESS; 5378 } 5379 5380 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 5381 switch (power_mode){ 5382 case HCI_POWER_ON: 5383 // do nothing 5384 break; 5385 case HCI_POWER_OFF: 5386 // no connections yet, just turn it off 5387 hci_power_control_off(); 5388 break; 5389 case HCI_POWER_SLEEP: 5390 // no connections yet, just turn it off 5391 hci_power_control_sleep(); 5392 break; 5393 default: 5394 btstack_assert(false); 5395 break; 5396 } 5397 return ERROR_CODE_SUCCESS; 5398 } 5399 5400 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 5401 switch (power_mode){ 5402 case HCI_POWER_ON: 5403 // do nothing 5404 break; 5405 case HCI_POWER_OFF: 5406 hci_power_enter_halting_state(); 5407 break; 5408 case HCI_POWER_SLEEP: 5409 // see hci_run 5410 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5411 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5412 break; 5413 default: 5414 btstack_assert(false); 5415 break; 5416 } 5417 return ERROR_CODE_SUCCESS; 5418 } 5419 5420 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 5421 switch (power_mode){ 5422 case HCI_POWER_ON: 5423 hci_power_enter_initializing_state(); 5424 break; 5425 case HCI_POWER_OFF: 5426 // do nothing 5427 break; 5428 case HCI_POWER_SLEEP: 5429 // see hci_run 5430 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 5431 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 5432 break; 5433 default: 5434 btstack_assert(false); 5435 break; 5436 } 5437 return ERROR_CODE_SUCCESS; 5438 } 5439 5440 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 5441 switch (power_mode){ 5442 case HCI_POWER_ON: 5443 hci_power_enter_initializing_state(); 5444 break; 5445 case HCI_POWER_OFF: 5446 hci_power_enter_halting_state(); 5447 break; 5448 case HCI_POWER_SLEEP: 5449 // do nothing 5450 break; 5451 default: 5452 btstack_assert(false); 5453 break; 5454 } 5455 return ERROR_CODE_SUCCESS; 5456 } 5457 5458 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 5459 int err; 5460 switch (power_mode){ 5461 case HCI_POWER_ON: 5462 err = hci_power_control_wake(); 5463 if (err) return err; 5464 hci_power_enter_initializing_state(); 5465 break; 5466 case HCI_POWER_OFF: 5467 hci_power_enter_halting_state(); 5468 break; 5469 case HCI_POWER_SLEEP: 5470 // do nothing 5471 break; 5472 default: 5473 btstack_assert(false); 5474 break; 5475 } 5476 return ERROR_CODE_SUCCESS; 5477 } 5478 5479 int hci_power_control(HCI_POWER_MODE power_mode){ 5480 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 5481 btstack_run_loop_remove_timer(&hci_stack->timeout); 5482 int err = 0; 5483 switch (hci_stack->state){ 5484 case HCI_STATE_OFF: 5485 err = hci_power_control_state_off(power_mode); 5486 break; 5487 case HCI_STATE_INITIALIZING: 5488 err = hci_power_control_state_initializing(power_mode); 5489 break; 5490 case HCI_STATE_WORKING: 5491 err = hci_power_control_state_working(power_mode); 5492 break; 5493 case HCI_STATE_HALTING: 5494 err = hci_power_control_state_halting(power_mode); 5495 break; 5496 case HCI_STATE_FALLING_ASLEEP: 5497 err = hci_power_control_state_falling_asleep(power_mode); 5498 break; 5499 case HCI_STATE_SLEEPING: 5500 err = hci_power_control_state_sleeping(power_mode); 5501 break; 5502 default: 5503 btstack_assert(false); 5504 break; 5505 } 5506 if (err != 0){ 5507 return err; 5508 } 5509 5510 // create internal event 5511 hci_emit_state(); 5512 5513 // trigger next/first action 5514 hci_run(); 5515 5516 return 0; 5517 } 5518 5519 5520 static void hci_halting_run(void) { 5521 5522 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 5523 5524 hci_connection_t *connection; 5525 #ifdef ENABLE_BLE 5526 #ifdef ENABLE_LE_PERIPHERAL 5527 bool stop_advertismenets; 5528 #endif 5529 #endif 5530 5531 switch (hci_stack->substate) { 5532 case HCI_HALTING_CLASSIC_STOP: 5533 #ifdef ENABLE_CLASSIC 5534 if (!hci_can_send_command_packet_now()) return; 5535 5536 if (hci_stack->connectable || hci_stack->discoverable){ 5537 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5538 hci_send_cmd(&hci_write_scan_enable, 0); 5539 return; 5540 } 5541 #endif 5542 /* fall through */ 5543 5544 case HCI_HALTING_LE_ADV_STOP: 5545 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 5546 5547 #ifdef ENABLE_BLE 5548 #ifdef ENABLE_LE_PERIPHERAL 5549 if (!hci_can_send_command_packet_now()) return; 5550 5551 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 5552 5553 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5554 if (hci_le_extended_advertising_supported()){ 5555 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5556 btstack_linked_list_iterator_t it; 5557 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5558 // stop all periodic advertisements and check if an extended set is active 5559 while (btstack_linked_list_iterator_has_next(&it)){ 5560 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5561 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5562 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5563 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 5564 return; 5565 } 5566 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5567 stop_advertismenets = true; 5568 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5569 } 5570 } 5571 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5572 if (stop_advertismenets){ 5573 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5574 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 5575 return; 5576 } 5577 } else 5578 #else /* ENABLE_LE_PERIPHERAL */ 5579 { 5580 if (stop_advertismenets) { 5581 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5582 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5583 return; 5584 } 5585 } 5586 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 5587 #endif /* ENABLE_LE_PERIPHERAL */ 5588 #endif /* ENABLE_BLE */ 5589 5590 /* fall through */ 5591 5592 case HCI_HALTING_LE_SCAN_STOP: 5593 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 5594 if (!hci_can_send_command_packet_now()) return; 5595 5596 #ifdef ENABLE_BLE 5597 #ifdef ENABLE_LE_CENTRAL 5598 if (hci_stack->le_scanning_active){ 5599 hci_le_scan_stop(); 5600 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5601 return; 5602 } 5603 #endif 5604 #endif 5605 5606 /* fall through */ 5607 5608 case HCI_HALTING_DISCONNECT_ALL: 5609 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 5610 if (!hci_can_send_command_packet_now()) return; 5611 5612 // close all open connections 5613 connection = (hci_connection_t *) hci_stack->connections; 5614 if (connection) { 5615 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 5616 5617 log_info("HCI_STATE_HALTING, connection %p, handle %u, state %u", connection, con_handle, connection->state); 5618 5619 // check state 5620 switch(connection->state) { 5621 case SENT_DISCONNECT: 5622 case RECEIVED_DISCONNECTION_COMPLETE: 5623 // wait until connection is gone 5624 return; 5625 default: 5626 break; 5627 } 5628 5629 // finally, send the disconnect command 5630 connection->state = SENT_DISCONNECT; 5631 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5632 return; 5633 } 5634 5635 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5636 // stop BIGs and BIG Syncs 5637 if (hci_stack->le_audio_bigs != NULL){ 5638 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 5639 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5640 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5641 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 5642 return; 5643 } 5644 if (hci_stack->le_audio_big_syncs != NULL){ 5645 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 5646 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 5647 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 5648 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 5649 return; 5650 } 5651 #endif 5652 5653 btstack_run_loop_remove_timer(&hci_stack->timeout); 5654 5655 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5656 log_info("HCI_STATE_HALTING: wait 50 ms"); 5657 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5658 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5659 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5660 btstack_run_loop_add_timer(&hci_stack->timeout); 5661 break; 5662 5663 case HCI_HALTING_W4_CLOSE_TIMER: 5664 // keep waiting 5665 break; 5666 5667 case HCI_HALTING_CLOSE: 5668 // close left over connections (that had not been properly closed before) 5669 hci_stack->substate = HCI_HALTING_CLOSE_DISCARDING_CONNECTIONS; 5670 hci_discard_connections(); 5671 5672 log_info("HCI_STATE_HALTING, calling off"); 5673 5674 // switch mode 5675 hci_power_control_off(); 5676 5677 log_info("HCI_STATE_HALTING, emitting state"); 5678 hci_emit_state(); 5679 log_info("HCI_STATE_HALTING, done"); 5680 break; 5681 5682 default: 5683 break; 5684 } 5685 }; 5686 5687 static void hci_falling_asleep_run(void){ 5688 hci_connection_t * connection; 5689 switch(hci_stack->substate) { 5690 case HCI_FALLING_ASLEEP_DISCONNECT: 5691 log_info("HCI_STATE_FALLING_ASLEEP"); 5692 // close all open connections 5693 connection = (hci_connection_t *) hci_stack->connections; 5694 if (connection){ 5695 5696 // send disconnect 5697 if (!hci_can_send_command_packet_now()) return; 5698 5699 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5700 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5701 5702 // send disconnected event right away - causes higher layer connections to get closed, too. 5703 hci_shutdown_connection(connection); 5704 return; 5705 } 5706 5707 if (hci_classic_supported()){ 5708 // disable page and inquiry scan 5709 if (!hci_can_send_command_packet_now()) return; 5710 5711 log_info("HCI_STATE_HALTING, disabling inq scans"); 5712 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5713 5714 // continue in next sub state 5715 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5716 break; 5717 } 5718 5719 /* fall through */ 5720 5721 case HCI_FALLING_ASLEEP_COMPLETE: 5722 log_info("HCI_STATE_HALTING, calling sleep"); 5723 // switch mode 5724 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5725 hci_emit_state(); 5726 break; 5727 5728 default: 5729 break; 5730 } 5731 } 5732 5733 #ifdef ENABLE_CLASSIC 5734 5735 static void hci_update_scan_enable(void){ 5736 // 2 = page scan, 1 = inq scan 5737 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5738 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5739 hci_run(); 5740 } 5741 5742 void gap_discoverable_control(uint8_t enable){ 5743 if (enable) enable = 1; // normalize argument 5744 5745 if (hci_stack->discoverable == enable){ 5746 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5747 return; 5748 } 5749 5750 hci_stack->discoverable = enable; 5751 hci_update_scan_enable(); 5752 } 5753 5754 void gap_connectable_control(uint8_t enable){ 5755 if (enable) enable = 1; // normalize argument 5756 5757 // don't emit event 5758 if (hci_stack->connectable == enable) return; 5759 5760 hci_stack->connectable = enable; 5761 hci_update_scan_enable(); 5762 } 5763 #endif 5764 5765 void gap_local_bd_addr(bd_addr_t address_buffer){ 5766 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5767 } 5768 5769 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5770 static void hci_host_num_completed_packets(void){ 5771 5772 // create packet manually as arrays are not supported and num_commands should not get reduced 5773 hci_reserve_packet_buffer(); 5774 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5775 5776 uint16_t size = 0; 5777 uint16_t num_handles = 0; 5778 packet[size++] = 0x35; 5779 packet[size++] = 0x0c; 5780 size++; // skip param len 5781 size++; // skip num handles 5782 5783 // add { handle, packets } entries 5784 btstack_linked_item_t * it; 5785 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5786 hci_connection_t * connection = (hci_connection_t *) it; 5787 if (connection->num_packets_completed){ 5788 little_endian_store_16(packet, size, connection->con_handle); 5789 size += 2; 5790 little_endian_store_16(packet, size, connection->num_packets_completed); 5791 size += 2; 5792 // 5793 num_handles++; 5794 connection->num_packets_completed = 0; 5795 } 5796 } 5797 5798 packet[2] = size - 3; 5799 packet[3] = num_handles; 5800 5801 hci_stack->host_completed_packets = 0; 5802 5803 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5804 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5805 5806 // release packet buffer for synchronous transport implementations 5807 if (hci_transport_synchronous()){ 5808 hci_release_packet_buffer(); 5809 hci_emit_transport_packet_sent(); 5810 } 5811 } 5812 #endif 5813 5814 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5815 UNUSED(ds); 5816 hci_stack->substate = HCI_HALTING_CLOSE; 5817 hci_halting_run(); 5818 } 5819 5820 static bool hci_run_acl_fragments(void){ 5821 if (hci_stack->acl_fragmentation_total_size > 0u) { 5822 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5823 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5824 if (connection) { 5825 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5826 hci_send_acl_packet_fragments(connection); 5827 return true; 5828 } 5829 } else { 5830 // connection gone -> discard further fragments 5831 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5832 hci_stack->acl_fragmentation_total_size = 0; 5833 hci_stack->acl_fragmentation_pos = 0; 5834 } 5835 } 5836 return false; 5837 } 5838 5839 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5840 static bool hci_run_iso_fragments(void){ 5841 if (hci_stack->iso_fragmentation_total_size > 0u) { 5842 // TODO: flow control 5843 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5844 hci_send_iso_packet_fragments(); 5845 return true; 5846 } 5847 } 5848 return false; 5849 } 5850 #endif 5851 5852 #ifdef ENABLE_CLASSIC 5853 5854 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5855 static bool hci_classic_operation_active(void) { 5856 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5857 return true; 5858 } 5859 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5860 return true; 5861 } 5862 btstack_linked_item_t * it; 5863 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5864 hci_connection_t *connection = (hci_connection_t *) it; 5865 switch (connection->state) { 5866 case SENT_CREATE_CONNECTION: 5867 case SENT_CANCEL_CONNECTION: 5868 case SENT_DISCONNECT: 5869 return true; 5870 default: 5871 break; 5872 } 5873 } 5874 return false; 5875 } 5876 #endif 5877 5878 static bool hci_run_general_gap_classic(void){ 5879 5880 // assert stack is working and classic is active 5881 if (hci_classic_supported() == false) return false; 5882 if (hci_stack->state != HCI_STATE_WORKING) return false; 5883 5884 // decline incoming connections 5885 if (hci_stack->decline_reason){ 5886 uint8_t reason = hci_stack->decline_reason; 5887 hci_stack->decline_reason = 0; 5888 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5889 return true; 5890 } 5891 5892 if (hci_stack->gap_tasks_classic != 0){ 5893 hci_run_gap_tasks_classic(); 5894 return true; 5895 } 5896 5897 // start/stop inquiry 5898 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5899 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5900 if (hci_classic_operation_active() == false) 5901 #endif 5902 { 5903 uint8_t duration = hci_stack->inquiry_state; 5904 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5905 if (hci_stack->inquiry_max_period_length != 0){ 5906 hci_send_cmd(&hci_periodic_inquiry_mode, hci_stack->inquiry_max_period_length, hci_stack->inquiry_min_period_length, hci_stack->inquiry_lap, duration, 0); 5907 } else { 5908 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5909 } 5910 return true; 5911 } 5912 } 5913 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5914 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5915 hci_send_cmd(&hci_inquiry_cancel); 5916 return true; 5917 } 5918 5919 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5920 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5921 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5922 return true; 5923 } 5924 5925 // remote name request 5926 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5927 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5928 if (hci_classic_operation_active() == false) 5929 #endif 5930 { 5931 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5932 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5933 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5934 return true; 5935 } 5936 } 5937 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5938 // Local OOB data 5939 if (hci_stack->classic_read_local_oob_data){ 5940 hci_stack->classic_read_local_oob_data = false; 5941 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5942 hci_send_cmd(&hci_read_local_extended_oob_data); 5943 } else { 5944 hci_send_cmd(&hci_read_local_oob_data); 5945 } 5946 } 5947 #endif 5948 // pairing 5949 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5950 uint8_t state = hci_stack->gap_pairing_state; 5951 uint8_t pin_code[PIN_CODE_LEN]; 5952 switch (state){ 5953 case GAP_PAIRING_STATE_SEND_PIN: 5954 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5955 memset(pin_code, 0, 16); 5956 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5957 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5958 break; 5959 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5960 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5961 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5962 break; 5963 case GAP_PAIRING_STATE_SEND_PASSKEY: 5964 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5965 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5966 break; 5967 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5968 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5969 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5970 break; 5971 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5972 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5973 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5974 break; 5975 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5976 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5977 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5978 break; 5979 default: 5980 break; 5981 } 5982 return true; 5983 } 5984 return false; 5985 } 5986 #endif 5987 5988 #ifdef ENABLE_BLE 5989 5990 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5991 static uint8_t hci_le_num_phys(uint8_t phys){ 5992 const uint8_t num_bits_set[] = { 0, 1, 1, 2, 1, 2, 2, 3 }; 5993 btstack_assert(phys); 5994 return num_bits_set[phys]; 5995 } 5996 #endif 5997 5998 #ifdef ENABLE_LE_CENTRAL 5999 static void hci_le_scan_stop(void){ 6000 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6001 if (hci_le_extended_advertising_supported()) { 6002 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 6003 } else 6004 #endif 6005 { 6006 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 6007 } 6008 } 6009 6010 static void 6011 hci_send_le_create_connection(uint8_t initiator_filter_policy, bd_addr_type_t address_type, uint8_t *address) { 6012 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6013 if (hci_le_extended_advertising_supported()) { 6014 // prepare arrays for all phys (LE Coded, LE 1M, LE 2M PHY) 6015 uint16_t le_connection_scan_interval[3]; 6016 uint16_t le_connection_scan_window[3]; 6017 uint16_t le_connection_interval_min[3]; 6018 uint16_t le_connection_interval_max[3]; 6019 uint16_t le_connection_latency[3]; 6020 uint16_t le_supervision_timeout[3]; 6021 uint16_t le_minimum_ce_length[3]; 6022 uint16_t le_maximum_ce_length[3]; 6023 6024 uint8_t i; 6025 uint8_t num_phys = hci_le_num_phys(hci_stack->le_connection_phys); 6026 for (i=0;i<num_phys;i++){ 6027 le_connection_scan_interval[i] = hci_stack->le_connection_scan_interval; 6028 le_connection_scan_window[i] = hci_stack->le_connection_scan_window; 6029 le_connection_interval_min[i] = hci_stack->le_connection_interval_min; 6030 le_connection_interval_max[i] = hci_stack->le_connection_interval_max; 6031 le_connection_latency[i] = hci_stack->le_connection_latency; 6032 le_supervision_timeout[i] = hci_stack->le_supervision_timeout; 6033 le_minimum_ce_length[i] = hci_stack->le_minimum_ce_length; 6034 le_maximum_ce_length[i] = hci_stack->le_maximum_ce_length; 6035 } 6036 hci_send_cmd(&hci_le_extended_create_connection, 6037 initiator_filter_policy, 6038 hci_stack->le_connection_own_addr_type, // our addr type: 6039 address_type, // peer address type 6040 address, // peer bd addr 6041 hci_stack->le_connection_phys, // initiating PHY 6042 le_connection_scan_interval, // conn scan interval 6043 le_connection_scan_window, // conn scan windows 6044 le_connection_interval_min, // conn interval min 6045 le_connection_interval_max, // conn interval max 6046 le_connection_latency, // conn latency 6047 le_supervision_timeout, // conn latency 6048 le_minimum_ce_length, // min ce length 6049 le_maximum_ce_length // max ce length 6050 ); 6051 } else 6052 #endif 6053 { 6054 hci_send_cmd(&hci_le_create_connection, 6055 hci_stack->le_connection_scan_interval, // conn scan interval 6056 hci_stack->le_connection_scan_window, // conn scan windows 6057 initiator_filter_policy, // don't use whitelist 6058 address_type, // peer address type 6059 address, // peer bd addr 6060 hci_stack->le_connection_own_addr_type, // our addr type: 6061 hci_stack->le_connection_interval_min, // conn interval min 6062 hci_stack->le_connection_interval_max, // conn interval max 6063 hci_stack->le_connection_latency, // conn latency 6064 hci_stack->le_supervision_timeout, // conn latency 6065 hci_stack->le_minimum_ce_length, // min ce length 6066 hci_stack->le_maximum_ce_length // max ce length 6067 ); 6068 } 6069 } 6070 #endif 6071 6072 #ifdef ENABLE_LE_PERIPHERAL 6073 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6074 static uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 6075 uint8_t operation = 0; 6076 if (pos == 0){ 6077 // first fragment or complete data 6078 operation |= 1; 6079 } 6080 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 6081 // last fragment or complete data 6082 operation |= 2; 6083 } 6084 return operation; 6085 } 6086 #endif 6087 #endif 6088 6089 static bool hci_run_general_gap_le(void){ 6090 6091 btstack_linked_list_iterator_t lit; 6092 6093 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6094 if (hci_stack->le_resolvable_private_address_update_s > 0){ 6095 uint16_t update_s = hci_stack->le_resolvable_private_address_update_s; 6096 hci_stack->le_resolvable_private_address_update_s = 0; 6097 hci_send_cmd(&hci_le_set_resolvable_private_address_timeout, update_s); 6098 return true; 6099 } 6100 #endif 6101 6102 // Phase 1: collect what to stop 6103 6104 #ifdef ENABLE_LE_CENTRAL 6105 bool scanning_stop = false; 6106 bool connecting_stop = false; 6107 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6108 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6109 bool periodic_sync_stop = false; 6110 #endif 6111 #endif 6112 #endif 6113 6114 #ifdef ENABLE_LE_PERIPHERAL 6115 bool advertising_stop = false; 6116 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6117 le_advertising_set_t * advertising_stop_set = NULL; 6118 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6119 bool periodic_advertising_stop = false; 6120 #endif 6121 #endif 6122 #endif 6123 6124 // check if own address changes 6125 uint8_t address_change_mask = LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6126 bool random_address_change = (hci_stack->le_advertisements_todo & address_change_mask) != 0; 6127 6128 // check if whitelist needs modification 6129 bool whitelist_modification_pending = false; 6130 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6131 while (btstack_linked_list_iterator_has_next(&lit)){ 6132 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6133 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 6134 whitelist_modification_pending = true; 6135 break; 6136 } 6137 } 6138 6139 // check if resolving list needs modification 6140 bool resolving_list_modification_pending = false; 6141 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6142 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 6143 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 6144 resolving_list_modification_pending = true; 6145 } 6146 #endif 6147 6148 #ifdef ENABLE_LE_CENTRAL 6149 6150 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6151 // check if periodic advertiser list needs modification 6152 bool periodic_list_modification_pending = false; 6153 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6154 while (btstack_linked_list_iterator_has_next(&lit)){ 6155 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6156 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 6157 periodic_list_modification_pending = true; 6158 break; 6159 } 6160 } 6161 #endif 6162 6163 // scanning control 6164 if (hci_stack->le_scanning_active) { 6165 // stop if: 6166 // - parameter change required 6167 // - it's disabled 6168 // - whitelist change required but used for scanning 6169 // - resolving list modified 6170 // - own address changes 6171 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 6172 if ((hci_stack->le_scanning_param_update) || 6173 !hci_stack->le_scanning_enabled || 6174 (scanning_uses_whitelist && whitelist_modification_pending) || 6175 resolving_list_modification_pending || 6176 random_address_change){ 6177 6178 scanning_stop = true; 6179 } 6180 } 6181 6182 // connecting control 6183 bool connecting_with_whitelist; 6184 switch (hci_stack->le_connecting_state){ 6185 case LE_CONNECTING_DIRECT: 6186 case LE_CONNECTING_WHITELIST: 6187 // stop connecting if: 6188 // - connecting uses white and whitelist modification pending 6189 // - if it got disabled 6190 // - resolving list modified 6191 // - own address changes 6192 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 6193 if ((connecting_with_whitelist && whitelist_modification_pending) || 6194 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 6195 resolving_list_modification_pending || 6196 random_address_change) { 6197 6198 connecting_stop = true; 6199 } 6200 break; 6201 default: 6202 break; 6203 } 6204 6205 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6206 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6207 // periodic sync control 6208 bool sync_with_advertiser_list; 6209 switch(hci_stack->le_periodic_sync_state){ 6210 case LE_CONNECTING_DIRECT: 6211 case LE_CONNECTING_WHITELIST: 6212 // stop sync if: 6213 // - sync with advertiser list and advertiser list modification pending 6214 // - if it got disabled 6215 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 6216 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 6217 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 6218 periodic_sync_stop = true; 6219 } 6220 break; 6221 default: 6222 break; 6223 } 6224 #endif 6225 #endif 6226 6227 #endif /* ENABLE_LE_CENTRAL */ 6228 6229 #ifdef ENABLE_LE_PERIPHERAL 6230 // le advertisement control 6231 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 6232 // stop if: 6233 // - parameter change required 6234 // - random address used in advertising and changes 6235 // - it's disabled 6236 // - whitelist change required but used for advertisement filter policy 6237 // - resolving list modified 6238 // - own address changes 6239 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 6240 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 6241 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6242 if (advertising_change || 6243 (advertising_uses_random_address && random_address_change) || 6244 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 6245 (advertising_uses_whitelist && whitelist_modification_pending) || 6246 resolving_list_modification_pending || 6247 random_address_change) { 6248 6249 advertising_stop = true; 6250 } 6251 } 6252 6253 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6254 if (hci_le_extended_advertising_supported() && (advertising_stop == false)){ 6255 btstack_linked_list_iterator_t it; 6256 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6257 while (btstack_linked_list_iterator_has_next(&it)){ 6258 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6259 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 6260 // stop if: 6261 // - parameter change required 6262 // - random address used in connectable advertising and changes 6263 // - it's disabled 6264 // - whitelist change required but used for advertisement filter policy 6265 // - resolving list modified 6266 // - own address changes 6267 // - advertisement set will be removed 6268 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 6269 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 6270 bool advertising_uses_random_address = 6271 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 6272 advertising_connectable; 6273 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 6274 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 6275 bool advertising_set_random_address_change = 6276 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 6277 bool advertising_set_will_be_removed = 6278 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 6279 if (advertising_parameter_change || 6280 (advertising_uses_random_address && advertising_set_random_address_change) || 6281 (advertising_enabled == false) || 6282 (advertising_uses_whitelist && whitelist_modification_pending) || 6283 resolving_list_modification_pending || 6284 advertising_set_will_be_removed) { 6285 6286 advertising_stop = true; 6287 advertising_stop_set = advertising_set; 6288 break; 6289 } 6290 } 6291 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6292 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 6293 // stop if: 6294 // - it's disabled 6295 // - parameter change required 6296 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 6297 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 6298 if ((periodic_enabled == false) || periodic_parameter_change){ 6299 periodic_advertising_stop = true; 6300 advertising_stop_set = advertising_set; 6301 } 6302 } 6303 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6304 } 6305 } 6306 #endif 6307 6308 #endif 6309 6310 6311 // Phase 2: stop everything that should be off during modifications 6312 6313 6314 // 2.1 Outgoing connection 6315 #ifdef ENABLE_LE_CENTRAL 6316 if (connecting_stop){ 6317 hci_send_cmd(&hci_le_create_connection_cancel); 6318 return true; 6319 } 6320 #endif 6321 6322 // 2.2 Scanning 6323 #ifdef ENABLE_LE_CENTRAL 6324 if (scanning_stop){ 6325 hci_stack->le_scanning_active = false; 6326 hci_le_scan_stop(); 6327 return true; 6328 } 6329 6330 // 2.3 Periodic Sync 6331 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6332 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 6333 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 6334 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 6335 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 6336 return true; 6337 } 6338 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6339 if (periodic_sync_stop){ 6340 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 6341 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 6342 return true; 6343 } 6344 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6345 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6346 #endif /* ENABLE_LE_CENTRAL */ 6347 6348 // 2.4 Advertising: legacy, extended, periodic 6349 #ifdef ENABLE_LE_PERIPHERAL 6350 if (advertising_stop){ 6351 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6352 if (hci_le_extended_advertising_supported()) { 6353 uint8_t advertising_stop_handle; 6354 if (advertising_stop_set != NULL){ 6355 advertising_stop_handle = advertising_stop_set->advertising_handle; 6356 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6357 } else { 6358 advertising_stop_handle = 0; 6359 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6360 } 6361 const uint8_t advertising_handles[] = { advertising_stop_handle }; 6362 const uint16_t durations[] = { 0 }; 6363 const uint16_t max_events[] = { 0 }; 6364 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 6365 } else 6366 #endif 6367 { 6368 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 6369 hci_send_cmd(&hci_le_set_advertise_enable, 0); 6370 } 6371 return true; 6372 } 6373 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6374 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6375 if (periodic_advertising_stop){ 6376 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6377 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 6378 return true; 6379 } 6380 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6381 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 6382 #endif /* ENABLE_LE_PERIPHERAL */ 6383 6384 6385 // Phase 3: modify 6386 6387 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY) { 6388 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 6389 // GAP Privacy, notify clients upon upcoming random address change 6390 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 6391 // notify might cause hci_run to get executed, check if we still can send 6392 gap_privacy_clients_notify(hci_stack->le_random_address); 6393 if (!hci_can_send_command_packet_now()) { 6394 return true; 6395 } 6396 } 6397 6398 // - wait until privacy update completed 6399 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PRIVACY_PENDING) != 0){ 6400 return false; 6401 } 6402 6403 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS){ 6404 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6405 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 6406 #ifdef ENABLE_LE_SET_ADV_PARAMS_ON_RANDOM_ADDRESS_CHANGE 6407 // workaround: on some Controllers, address in advertisements is updated only after next dv params set 6408 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6409 #endif 6410 return true; 6411 } 6412 6413 #ifdef ENABLE_LE_CENTRAL 6414 if (hci_stack->le_scanning_param_update){ 6415 hci_stack->le_scanning_param_update = false; 6416 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6417 if (hci_le_extended_advertising_supported()){ 6418 // prepare arrays for all phys (LE Coded and LE 1M PHY) 6419 uint8_t scan_types[2]; 6420 uint16_t scan_intervals[2]; 6421 uint16_t scan_windows[2]; 6422 6423 uint8_t i; 6424 uint8_t num_phys = hci_le_num_phys(hci_stack->le_scan_phys); 6425 for (i=0;i<num_phys;i++){ 6426 scan_types[i] = hci_stack->le_scan_type; 6427 scan_intervals[i] = hci_stack->le_scan_interval; 6428 scan_windows[i] = hci_stack->le_scan_window; 6429 } 6430 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 6431 hci_stack->le_scan_filter_policy, hci_stack->le_scan_phys, scan_types, scan_intervals, scan_windows); 6432 } else 6433 #endif 6434 { 6435 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 6436 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 6437 } 6438 return true; 6439 } 6440 #endif 6441 6442 #ifdef ENABLE_LE_PERIPHERAL 6443 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 6444 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6445 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 6446 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6447 if (hci_le_extended_advertising_supported()){ 6448 // map advertisment type to advertising event properties 6449 uint16_t adv_event_properties = 0; 6450 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 6451 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 6452 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 6453 } 6454 hci_stack->le_advertising_set_in_current_command = 0; 6455 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6456 0, 6457 adv_event_properties, 6458 hci_stack->le_advertisements_interval_min, 6459 hci_stack->le_advertisements_interval_max, 6460 hci_stack->le_advertisements_channel_map, 6461 hci_stack->le_advertisements_own_addr_type, 6462 hci_stack->le_advertisements_direct_address_type, 6463 hci_stack->le_advertisements_direct_address, 6464 hci_stack->le_advertisements_filter_policy, 6465 0x7f, // tx power: no preference 6466 0x01, // primary adv phy: LE 1M 6467 0, // secondary adv max skip 6468 0x01, // secondary adv phy 6469 0, // adv sid 6470 0 // scan request notification 6471 ); 6472 } else 6473 #endif 6474 { 6475 hci_send_cmd(&hci_le_set_advertising_parameters, 6476 hci_stack->le_advertisements_interval_min, 6477 hci_stack->le_advertisements_interval_max, 6478 hci_stack->le_advertisements_type, 6479 hci_stack->le_advertisements_own_addr_type, 6480 hci_stack->le_advertisements_direct_address_type, 6481 hci_stack->le_advertisements_direct_address, 6482 hci_stack->le_advertisements_channel_map, 6483 hci_stack->le_advertisements_filter_policy); 6484 } 6485 return true; 6486 } 6487 6488 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6489 // assumption: only set if extended advertising is supported 6490 if ((hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0) != 0){ 6491 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 6492 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 6493 return true; 6494 } 6495 #endif 6496 6497 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 6498 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6499 uint8_t adv_data_clean[31]; 6500 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 6501 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 6502 hci_stack->le_advertisements_data_len); 6503 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 6504 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6505 if (hci_le_extended_advertising_supported()){ 6506 hci_stack->le_advertising_set_in_current_command = 0; 6507 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 6508 } else 6509 #endif 6510 { 6511 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 6512 } 6513 return true; 6514 } 6515 6516 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 6517 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6518 uint8_t scan_data_clean[31]; 6519 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 6520 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 6521 hci_stack->le_scan_response_data_len); 6522 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 6523 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6524 if (hci_le_extended_advertising_supported()){ 6525 hci_stack->le_advertising_set_in_current_command = 0; 6526 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 6527 } else 6528 #endif 6529 { 6530 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 6531 } 6532 return true; 6533 } 6534 6535 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6536 if (hci_le_extended_advertising_supported()) { 6537 btstack_linked_list_iterator_t it; 6538 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6539 while (btstack_linked_list_iterator_has_next(&it)){ 6540 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 6541 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 6542 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 6543 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6544 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 6545 return true; 6546 } 6547 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 6548 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 6549 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6550 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 6551 advertising_set->advertising_handle, 6552 advertising_set->extended_params.advertising_event_properties, 6553 advertising_set->extended_params.primary_advertising_interval_min, 6554 advertising_set->extended_params.primary_advertising_interval_max, 6555 advertising_set->extended_params.primary_advertising_channel_map, 6556 advertising_set->extended_params.own_address_type, 6557 advertising_set->extended_params.peer_address_type, 6558 advertising_set->extended_params.peer_address, 6559 advertising_set->extended_params.advertising_filter_policy, 6560 advertising_set->extended_params.advertising_tx_power, 6561 advertising_set->extended_params.primary_advertising_phy, 6562 advertising_set->extended_params.secondary_advertising_max_skip, 6563 advertising_set->extended_params.secondary_advertising_phy, 6564 advertising_set->extended_params.advertising_sid, 6565 advertising_set->extended_params.scan_request_notification_enable 6566 ); 6567 return true; 6568 } 6569 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 6570 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 6571 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 6572 return true; 6573 } 6574 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 6575 uint16_t pos = advertising_set->adv_data_pos; 6576 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 6577 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6578 if ((operation & 0x02) != 0){ 6579 // last fragment or complete data 6580 operation |= 2; 6581 advertising_set->adv_data_pos = 0; 6582 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 6583 } else { 6584 advertising_set->adv_data_pos += data_to_upload; 6585 } 6586 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6587 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 6588 return true; 6589 } 6590 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 6591 uint16_t pos = advertising_set->scan_data_pos; 6592 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 6593 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6594 if ((operation & 0x02) != 0){ 6595 advertising_set->scan_data_pos = 0; 6596 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 6597 } else { 6598 advertising_set->scan_data_pos += data_to_upload; 6599 } 6600 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6601 hci_send_cmd(&hci_le_set_extended_scan_response_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 6602 return true; 6603 } 6604 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6605 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 6606 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 6607 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6608 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 6609 advertising_set->advertising_handle, 6610 advertising_set->periodic_params.periodic_advertising_interval_min, 6611 advertising_set->periodic_params.periodic_advertising_interval_max, 6612 advertising_set->periodic_params.periodic_advertising_properties); 6613 return true; 6614 } 6615 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 6616 uint16_t pos = advertising_set->periodic_data_pos; 6617 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 6618 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 6619 if ((operation & 0x02) != 0){ 6620 // last fragment or complete data 6621 operation |= 2; 6622 advertising_set->periodic_data_pos = 0; 6623 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 6624 } else { 6625 advertising_set->periodic_data_pos += data_to_upload; 6626 } 6627 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 6628 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 6629 return true; 6630 } 6631 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6632 } 6633 } 6634 #endif 6635 6636 #endif 6637 6638 #ifdef ENABLE_LE_CENTRAL 6639 // if connect with whitelist was active and is not cancelled yet, wait until next time 6640 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 6641 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6642 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 6643 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 6644 #endif 6645 #endif 6646 6647 // LE Whitelist Management 6648 if (whitelist_modification_pending){ 6649 // add/remove entries 6650 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6651 while (btstack_linked_list_iterator_has_next(&lit)){ 6652 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 6653 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 6654 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 6655 entry->state &= ~LE_WHITELIST_ON_CONTROLLER; 6656 bd_addr_type_t address_type = entry->address_type; 6657 bd_addr_t address; 6658 memcpy(address, entry->address, 6); 6659 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) == 0){ 6660 // remove from whitelist if not scheduled for re-addition 6661 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 6662 btstack_memory_whitelist_entry_free(entry); 6663 } 6664 hci_send_cmd(&hci_le_remove_device_from_white_list, address_type, address); 6665 return true; 6666 } 6667 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 6668 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 6669 entry->state |= LE_WHITELIST_ON_CONTROLLER; 6670 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 6671 return true; 6672 } 6673 } 6674 } 6675 6676 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6677 // LE Resolving List Management 6678 if (resolving_list_modification_pending) { 6679 uint16_t i; 6680 uint8_t null_16[16]; 6681 uint8_t local_irk_flipped[16]; 6682 const uint8_t *local_irk; 6683 switch (hci_stack->le_resolving_list_state) { 6684 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 6685 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6686 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 6687 return true; 6688 case LE_RESOLVING_LIST_READ_SIZE: 6689 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 6690 hci_send_cmd(&hci_le_read_resolving_list_size); 6691 return true; 6692 case LE_RESOLVING_LIST_SEND_CLEAR: 6693 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SET_IRK; 6694 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 6695 sizeof(hci_stack->le_resolving_list_add_entries)); 6696 (void) memset(hci_stack->le_resolving_list_set_privacy_mode, 0xff, 6697 sizeof(hci_stack->le_resolving_list_set_privacy_mode)); 6698 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 6699 sizeof(hci_stack->le_resolving_list_remove_entries)); 6700 hci_send_cmd(&hci_le_clear_resolving_list); 6701 return true; 6702 case LE_RESOLVING_LIST_SET_IRK: 6703 // set IRK used by RPA for undirected advertising 6704 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 6705 local_irk = gap_get_persistent_irk(); 6706 reverse_128(local_irk, local_irk_flipped); 6707 memset(null_16, 0, sizeof(null_16)); 6708 hci_send_cmd(&hci_le_add_device_to_resolving_list, BD_ADDR_TYPE_LE_PUBLIC, null_16, 6709 null_16, local_irk_flipped); 6710 return true; 6711 case LE_RESOLVING_LIST_UPDATES_ENTRIES: 6712 // first remove old entries 6713 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6714 uint8_t offset = i >> 3; 6715 uint8_t mask = 1 << (i & 7); 6716 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 6717 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 6718 bd_addr_t peer_identity_addreses; 6719 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6720 sm_key_t peer_irk; 6721 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6722 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6723 6724 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 6725 // trigger whitelist entry 'update' (work around for controller bug) 6726 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 6727 while (btstack_linked_list_iterator_has_next(&lit)) { 6728 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 6729 if (entry->address_type != peer_identity_addr_type) continue; 6730 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 6731 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 6732 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 6733 } 6734 #endif 6735 6736 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 6737 peer_identity_addreses); 6738 return true; 6739 } 6740 6741 // then add new entries 6742 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6743 uint8_t offset = i >> 3; 6744 uint8_t mask = 1 << (i & 7); 6745 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 6746 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 6747 bd_addr_t peer_identity_addreses; 6748 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6749 sm_key_t peer_irk; 6750 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 6751 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6752 if (btstack_is_null(peer_irk, 16)) continue; 6753 local_irk = gap_get_persistent_irk(); 6754 // command uses format specifier 'P' that stores 16-byte value without flip 6755 uint8_t peer_irk_flipped[16]; 6756 reverse_128(local_irk, local_irk_flipped); 6757 reverse_128(peer_irk, peer_irk_flipped); 6758 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 6759 peer_irk_flipped, local_irk_flipped); 6760 return true; 6761 } 6762 6763 // finally, set privacy mode 6764 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 6765 uint8_t offset = i >> 3; 6766 uint8_t mask = 1 << (i & 7); 6767 if ((hci_stack->le_resolving_list_set_privacy_mode[offset] & mask) == 0) continue; 6768 hci_stack->le_resolving_list_set_privacy_mode[offset] &= ~mask; 6769 if (hci_stack->le_privacy_mode == LE_PRIVACY_MODE_NETWORK) { 6770 // Network Privacy Mode is default 6771 continue; 6772 } 6773 bd_addr_t peer_identity_address; 6774 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 6775 sm_key_t peer_irk; 6776 le_device_db_info(i, &peer_identity_addr_type, peer_identity_address, peer_irk); 6777 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 6778 if (btstack_is_null(peer_irk, 16)) continue; 6779 // command uses format specifier 'P' that stores 16-byte value without flip 6780 uint8_t peer_irk_flipped[16]; 6781 reverse_128(peer_irk, peer_irk_flipped); 6782 hci_send_cmd(&hci_le_set_privacy_mode, peer_identity_addr_type, peer_identity_address, hci_stack->le_privacy_mode); 6783 return true; 6784 } 6785 break; 6786 6787 default: 6788 break; 6789 } 6790 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 6791 } 6792 #endif 6793 6794 #ifdef ENABLE_LE_CENTRAL 6795 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6796 // LE Whitelist Management 6797 if (periodic_list_modification_pending){ 6798 // add/remove entries 6799 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6800 while (btstack_linked_list_iterator_has_next(&lit)){ 6801 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6802 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6803 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6804 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6805 return true; 6806 } 6807 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6808 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6809 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6810 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6811 return true; 6812 } 6813 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6814 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6815 btstack_memory_periodic_advertiser_list_entry_free(entry); 6816 } 6817 } 6818 } 6819 #endif 6820 #endif 6821 6822 #ifdef ENABLE_LE_CENTRAL 6823 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6824 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6825 if (hci_stack->le_past_set_default_params){ 6826 hci_stack->le_past_set_default_params = false; 6827 hci_send_cmd(&hci_le_set_default_periodic_advertising_sync_transfer_parameters, 6828 hci_stack->le_past_mode, 6829 hci_stack->le_past_skip, 6830 hci_stack->le_past_sync_timeout, 6831 hci_stack->le_past_cte_type); 6832 return true; 6833 } 6834 #endif 6835 #endif 6836 #endif 6837 6838 // post-pone all actions until stack is fully working 6839 if (hci_stack->state != HCI_STATE_WORKING) return false; 6840 6841 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6842 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6843 6844 // Phase 4: restore state 6845 6846 #ifdef ENABLE_LE_CENTRAL 6847 // re-start scanning 6848 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6849 hci_stack->le_scanning_active = true; 6850 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6851 if (hci_le_extended_advertising_supported()){ 6852 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, hci_stack->le_scan_filter_duplicates, 0, 0); 6853 } else 6854 #endif 6855 { 6856 hci_send_cmd(&hci_le_set_scan_enable, 1, hci_stack->le_scan_filter_duplicates); 6857 } 6858 return true; 6859 } 6860 #endif 6861 6862 #ifdef ENABLE_LE_CENTRAL 6863 // re-start connecting 6864 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6865 bd_addr_t null_addr; 6866 memset(null_addr, 0, 6); 6867 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6868 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6869 hci_send_le_create_connection(1, 0, null_addr); 6870 return true; 6871 } 6872 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6873 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6874 switch(hci_stack->le_periodic_sync_request){ 6875 case LE_CONNECTING_DIRECT: 6876 case LE_CONNECTING_WHITELIST: 6877 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6878 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6879 hci_stack->le_periodic_sync_options, 6880 hci_stack->le_periodic_sync_advertising_sid, 6881 hci_stack->le_periodic_sync_advertiser_address_type, 6882 hci_stack->le_periodic_sync_advertiser_address, 6883 hci_stack->le_periodic_sync_skip, 6884 hci_stack->le_periodic_sync_timeout, 6885 hci_stack->le_periodic_sync_cte_type); 6886 return true; 6887 default: 6888 break; 6889 } 6890 } 6891 #endif 6892 #endif 6893 6894 #ifdef ENABLE_LE_PERIPHERAL 6895 // re-start advertising 6896 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6897 // check if advertisements should be enabled given 6898 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6899 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6900 6901 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6902 if (hci_le_extended_advertising_supported()){ 6903 const uint8_t advertising_handles[] = { 0 }; 6904 const uint16_t durations[] = { 0 }; 6905 const uint16_t max_events[] = { 0 }; 6906 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6907 } else 6908 #endif 6909 { 6910 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6911 } 6912 return true; 6913 } 6914 6915 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6916 if (hci_le_extended_advertising_supported()) { 6917 btstack_linked_list_iterator_t it; 6918 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6919 while (btstack_linked_list_iterator_has_next(&it)) { 6920 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6921 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6922 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6923 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6924 const uint16_t durations[] = { advertising_set->enable_timeout }; 6925 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6926 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6927 return true; 6928 } 6929 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6930 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6931 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6932 uint8_t enable = 1; 6933 if (advertising_set->periodic_include_adi){ 6934 enable |= 2; 6935 } 6936 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6937 return true; 6938 } 6939 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6940 } 6941 } 6942 #endif 6943 #endif 6944 6945 return false; 6946 } 6947 6948 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6949 static bool hci_run_iso_tasks(void){ 6950 btstack_linked_list_iterator_t it; 6951 6952 if (hci_stack->iso_active_operation_type != HCI_ISO_TYPE_INVALID) { 6953 return false; 6954 } 6955 6956 // BIG 6957 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6958 while (btstack_linked_list_iterator_has_next(&it)){ 6959 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6960 switch (big->state){ 6961 case LE_AUDIO_BIG_STATE_CREATE: 6962 hci_stack->iso_active_operation_group_id = big->params->big_handle; 6963 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 6964 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6965 hci_send_cmd(&hci_le_create_big, 6966 big->params->big_handle, 6967 big->params->advertising_handle, 6968 big->params->num_bis, 6969 big->params->sdu_interval_us, 6970 big->params->max_sdu, 6971 big->params->max_transport_latency_ms, 6972 big->params->rtn, 6973 big->params->phy, 6974 big->params->packing, 6975 big->params->framing, 6976 big->params->encryption, 6977 big->params->broadcast_code); 6978 return true; 6979 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6980 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6981 hci_send_cmd(&hci_le_setup_iso_data_path, big->bis_con_handles[big->state_vars.next_bis], 0, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 6982 return true; 6983 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6984 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6985 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6986 return true; 6987 case LE_AUDIO_BIG_STATE_TERMINATE: 6988 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6989 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6990 return true; 6991 default: 6992 break; 6993 } 6994 } 6995 6996 // BIG Sync 6997 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6998 while (btstack_linked_list_iterator_has_next(&it)){ 6999 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 7000 switch (big_sync->state){ 7001 case LE_AUDIO_BIG_STATE_CREATE: 7002 hci_stack->iso_active_operation_group_id = big_sync->params->big_handle; 7003 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_BIS; 7004 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 7005 hci_send_cmd(&hci_le_big_create_sync, 7006 big_sync->params->big_handle, 7007 big_sync->params->sync_handle, 7008 big_sync->params->encryption, 7009 big_sync->params->broadcast_code, 7010 big_sync->params->mse, 7011 big_sync->params->big_sync_timeout_10ms, 7012 big_sync->params->num_bis, 7013 big_sync->params->bis_indices); 7014 return true; 7015 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 7016 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 7017 hci_send_cmd(&hci_le_setup_iso_data_path, big_sync->bis_con_handles[big_sync->state_vars.next_bis], 1, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 7018 return true; 7019 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 7020 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 7021 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 7022 return true; 7023 case LE_AUDIO_BIG_STATE_TERMINATE: 7024 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 7025 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 7026 return true; 7027 default: 7028 break; 7029 } 7030 } 7031 7032 // CIG 7033 bool cig_active; 7034 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 7035 while (btstack_linked_list_iterator_has_next(&it)) { 7036 le_audio_cig_t *cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 7037 uint8_t i; 7038 // Set CIG Parameters 7039 uint8_t cis_id[MAX_NR_CIS]; 7040 uint16_t max_sdu_c_to_p[MAX_NR_CIS]; 7041 uint16_t max_sdu_p_to_c[MAX_NR_CIS]; 7042 uint8_t phy_c_to_p[MAX_NR_CIS]; 7043 uint8_t phy_p_to_c[MAX_NR_CIS]; 7044 uint8_t rtn_c_to_p[MAX_NR_CIS]; 7045 uint8_t rtn_p_to_c[MAX_NR_CIS]; 7046 switch (cig->state) { 7047 case LE_AUDIO_CIG_STATE_CREATE: 7048 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7049 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7050 cig->state = LE_AUDIO_CIG_STATE_W4_ESTABLISHED; 7051 le_audio_cig_params_t * params = cig->params; 7052 for (i = 0; i < params->num_cis; i++) { 7053 le_audio_cis_params_t * cis_params = &cig->params->cis_params[i]; 7054 cis_id[i] = cis_params->cis_id; 7055 max_sdu_c_to_p[i] = cis_params->max_sdu_c_to_p; 7056 max_sdu_p_to_c[i] = cis_params->max_sdu_p_to_c; 7057 phy_c_to_p[i] = cis_params->phy_c_to_p; 7058 phy_p_to_c[i] = cis_params->phy_p_to_c; 7059 rtn_c_to_p[i] = cis_params->rtn_c_to_p; 7060 rtn_p_to_c[i] = cis_params->rtn_p_to_c; 7061 } 7062 hci_send_cmd(&hci_le_set_cig_parameters, 7063 cig->cig_id, 7064 params->sdu_interval_c_to_p, 7065 params->sdu_interval_p_to_c, 7066 params->worst_case_sca, 7067 params->packing, 7068 params->framing, 7069 params->max_transport_latency_c_to_p, 7070 params->max_transport_latency_p_to_c, 7071 params->num_cis, 7072 cis_id, 7073 max_sdu_c_to_p, 7074 max_sdu_p_to_c, 7075 phy_c_to_p, 7076 phy_p_to_c, 7077 rtn_c_to_p, 7078 rtn_p_to_c 7079 ); 7080 return true; 7081 case LE_AUDIO_CIG_STATE_CREATE_CIS: 7082 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7083 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7084 cig->state = LE_AUDIO_CIG_STATE_W4_CREATE_CIS; 7085 for (i=0;i<cig->num_cis;i++){ 7086 cig->cis_setup_active[i] = true; 7087 } 7088 hci_send_cmd(&hci_le_create_cis, cig->num_cis, cig->cis_con_handles, cig->acl_con_handles); 7089 return true; 7090 case LE_AUDIO_CIG_STATE_SETUP_ISO_PATH: 7091 while (cig->state_vars.next_cis < (cig->num_cis * 2)){ 7092 // find next path to setup 7093 uint8_t cis_index = cig->state_vars.next_cis >> 1; 7094 if (cig->cis_established[cis_index] == false) { 7095 continue; 7096 } 7097 uint8_t cis_direction = cig->state_vars.next_cis & 1; 7098 bool setup = true; 7099 if (cis_direction == 0){ 7100 // 0 - input - host to controller 7101 // we are central => central to peripheral 7102 setup &= cig->params->cis_params[cis_index].max_sdu_c_to_p > 0; 7103 } else { 7104 // 1 - output - controller to host 7105 // we are central => peripheral to central 7106 setup &= cig->params->cis_params[cis_index].max_sdu_p_to_c > 0; 7107 } 7108 if (setup){ 7109 hci_stack->iso_active_operation_group_id = cig->params->cig_id; 7110 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7111 cig->state = LE_AUDIO_CIG_STATE_W4_SETUP_ISO_PATH; 7112 hci_send_cmd(&hci_le_setup_iso_data_path, cig->cis_con_handles[cis_index], cis_direction, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 7113 return true; 7114 } 7115 cig->state_vars.next_cis++; 7116 } 7117 // emit done 7118 cig->state = LE_AUDIO_CIG_STATE_ACTIVE; 7119 break; 7120 case LE_AUDIO_CIG_STATE_REMOVE: 7121 // check if CIG Active 7122 cig_active = false; 7123 for (i = 0; i < cig->num_cis; i++) { 7124 if (cig->cis_con_handles[i] != HCI_CON_HANDLE_INVALID){ 7125 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 7126 if (stream != NULL){ 7127 cig_active = true; 7128 break; 7129 } 7130 } 7131 } 7132 if (cig_active == false){ 7133 btstack_linked_list_iterator_remove(&it); 7134 hci_send_cmd(&hci_le_remove_cig, cig->cig_id); 7135 return true; 7136 } 7137 default: 7138 break; 7139 } 7140 } 7141 7142 // CIS Accept/Reject/Setup ISO Path/Close 7143 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 7144 while (btstack_linked_list_iterator_has_next(&it)) { 7145 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 7146 hci_con_handle_t con_handle; 7147 switch (iso_stream->state){ 7148 case HCI_ISO_STREAM_W2_ACCEPT: 7149 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 7150 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7151 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7152 hci_send_cmd(&hci_le_accept_cis_request, iso_stream->cis_handle); 7153 return true; 7154 case HCI_ISO_STREAM_W2_REJECT: 7155 con_handle = iso_stream->cis_handle; 7156 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7157 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7158 hci_iso_stream_finalize(iso_stream); 7159 hci_send_cmd(&hci_le_reject_cis_request, con_handle, ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES); 7160 return true; 7161 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_INPUT: 7162 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7163 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7164 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_INPUT; 7165 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 0, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 7166 break; 7167 case HCI_ISO_STREAM_STATE_W2_SETUP_ISO_OUTPUT: 7168 hci_stack->iso_active_operation_group_id = HCI_ISO_GROUP_ID_SINGLE_CIS; 7169 hci_stack->iso_active_operation_type = HCI_ISO_TYPE_CIS; 7170 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ISO_SETUP_OUTPUT; 7171 hci_send_cmd(&hci_le_setup_iso_data_path, iso_stream->cis_handle, 1, 0, HCI_AUDIO_CODING_FORMAT_TRANSPARENT, 0, 0, 0, 0, NULL); 7172 break; 7173 case HCI_ISO_STREAM_STATE_W2_CLOSE: 7174 iso_stream->state = HCI_ISO_STREAM_STATE_W4_DISCONNECTED; 7175 hci_send_cmd(&hci_disconnect, iso_stream->cis_handle); 7176 break; 7177 default: 7178 break; 7179 } 7180 } 7181 7182 return false; 7183 } 7184 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 7185 #endif 7186 7187 static bool hci_run_general_pending_commands(void){ 7188 btstack_linked_item_t * it; 7189 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7190 hci_connection_t * connection = (hci_connection_t *) it; 7191 7192 switch(connection->state){ 7193 case SEND_CREATE_CONNECTION: 7194 switch(connection->address_type){ 7195 #ifdef ENABLE_CLASSIC 7196 case BD_ADDR_TYPE_ACL: 7197 log_info("sending hci_create_connection"); 7198 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 7199 break; 7200 #endif 7201 default: 7202 #ifdef ENABLE_BLE 7203 #ifdef ENABLE_LE_CENTRAL 7204 log_info("sending hci_le_create_connection"); 7205 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 7206 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 7207 hci_send_le_create_connection(0, connection->address_type, connection->address); 7208 connection->state = SENT_CREATE_CONNECTION; 7209 #endif 7210 #endif 7211 break; 7212 } 7213 return true; 7214 7215 #ifdef ENABLE_CLASSIC 7216 case RECEIVED_CONNECTION_REQUEST: 7217 if (connection->address_type == BD_ADDR_TYPE_ACL){ 7218 log_info("sending hci_accept_connection_request"); 7219 connection->state = ACCEPTED_CONNECTION_REQUEST; 7220 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 7221 return true; 7222 } 7223 break; 7224 #endif 7225 case SEND_DISCONNECT: 7226 connection->state = SENT_DISCONNECT; 7227 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7228 return true; 7229 7230 default: 7231 break; 7232 } 7233 7234 // no further commands if connection is about to get shut down 7235 if (connection->state == SENT_DISCONNECT) continue; 7236 7237 #ifdef ENABLE_CLASSIC 7238 7239 // Handling link key request requires remote supported features 7240 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 7241 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 7242 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7243 7244 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 7245 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 7246 if (have_link_key && security_level_sufficient){ 7247 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 7248 } else { 7249 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 7250 } 7251 return true; 7252 } 7253 7254 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 7255 log_info("denying to pin request"); 7256 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 7257 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 7258 return true; 7259 } 7260 7261 // security assessment requires remote features 7262 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 7263 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 7264 hci_ssp_assess_security_on_io_cap_request(connection); 7265 // no return here as hci_ssp_assess_security_on_io_cap_request only sets AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY or AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY 7266 } 7267 7268 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 7269 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7270 // set authentication requirements: 7271 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 7272 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 7273 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 7274 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 7275 authreq |= 1; 7276 } 7277 bool bonding = hci_stack->bondable; 7278 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 7279 // if we have received IO Cap Response, we're in responder role 7280 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7281 if (bonding && !remote_bonding){ 7282 log_info("Remote not bonding, dropping local flag"); 7283 bonding = false; 7284 } 7285 } 7286 if (bonding){ 7287 if (connection->bonding_flags & BONDING_DEDICATED){ 7288 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 7289 } else { 7290 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 7291 } 7292 } 7293 uint8_t have_oob_data = 0; 7294 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7295 if (connection->classic_oob_c_192 != NULL){ 7296 have_oob_data |= 1; 7297 } 7298 if (connection->classic_oob_c_256 != NULL){ 7299 have_oob_data |= 2; 7300 } 7301 #endif 7302 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 7303 return true; 7304 } 7305 7306 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 7307 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7308 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 7309 return true; 7310 } 7311 7312 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7313 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 7314 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 7315 const uint8_t zero[16] = { 0 }; 7316 const uint8_t * r_192 = zero; 7317 const uint8_t * c_192 = zero; 7318 const uint8_t * r_256 = zero; 7319 const uint8_t * c_256 = zero; 7320 // verify P-256 OOB 7321 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 7322 c_256 = connection->classic_oob_c_256; 7323 if (connection->classic_oob_r_256 != NULL) { 7324 r_256 = connection->classic_oob_r_256; 7325 } 7326 } 7327 // verify P-192 OOB 7328 if ((connection->classic_oob_c_192 != NULL)) { 7329 c_192 = connection->classic_oob_c_192; 7330 if (connection->classic_oob_r_192 != NULL) { 7331 r_192 = connection->classic_oob_r_192; 7332 } 7333 } 7334 7335 // assess security 7336 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 7337 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 7338 if (need_level_4 && !can_reach_level_4){ 7339 log_info("Level 4 required, but not possible -> abort"); 7340 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 7341 // send oob negative reply 7342 c_256 = NULL; 7343 c_192 = NULL; 7344 } 7345 7346 // Reply 7347 if (c_256 != zero) { 7348 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 7349 } else if (c_192 != zero){ 7350 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 7351 } else { 7352 hci_stack->classic_oob_con_handle = connection->con_handle; 7353 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 7354 } 7355 return true; 7356 } 7357 #endif 7358 7359 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 7360 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 7361 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 7362 return true; 7363 } 7364 7365 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 7366 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 7367 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 7368 return true; 7369 } 7370 7371 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 7372 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 7373 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 7374 return true; 7375 } 7376 7377 if ((connection->bonding_flags & (BONDING_DISCONNECT_DEDICATED_DONE | BONDING_DEDICATED_DEFER_DISCONNECT)) == BONDING_DISCONNECT_DEDICATED_DONE){ 7378 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 7379 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 7380 connection->state = SENT_DISCONNECT; 7381 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 7382 return true; 7383 } 7384 7385 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 7386 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 7387 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 7388 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 7389 return true; 7390 } 7391 7392 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 7393 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 7394 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 7395 return true; 7396 } 7397 7398 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 7399 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 7400 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 7401 return true; 7402 } 7403 7404 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 7405 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7406 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 7407 return true; 7408 } 7409 7410 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 7411 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 7412 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 7413 return true; 7414 } 7415 7416 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 7417 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 7418 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 7419 return true; 7420 } 7421 #endif 7422 7423 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 7424 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 7425 #ifdef ENABLE_CLASSIC 7426 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 7427 #endif 7428 if (connection->state != SENT_DISCONNECT){ 7429 connection->state = SENT_DISCONNECT; 7430 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 7431 return true; 7432 } 7433 } 7434 7435 #ifdef ENABLE_CLASSIC 7436 uint16_t sniff_min_interval; 7437 switch (connection->sniff_min_interval){ 7438 case 0: 7439 break; 7440 case 0xffff: 7441 connection->sniff_min_interval = 0; 7442 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 7443 return true; 7444 default: 7445 sniff_min_interval = connection->sniff_min_interval; 7446 connection->sniff_min_interval = 0; 7447 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 7448 return true; 7449 } 7450 7451 if (connection->sniff_subrating_max_latency != 0xffff){ 7452 uint16_t max_latency = connection->sniff_subrating_max_latency; 7453 connection->sniff_subrating_max_latency = 0; 7454 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 7455 return true; 7456 } 7457 7458 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 7459 uint8_t service_type = (uint8_t) connection->qos_service_type; 7460 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 7461 hci_send_cmd(&hci_qos_setup, connection->con_handle, 0, service_type, connection->qos_token_rate, connection->qos_peak_bandwidth, connection->qos_latency, connection->qos_delay_variation); 7462 return true; 7463 } 7464 7465 if (connection->request_role != HCI_ROLE_INVALID){ 7466 hci_role_t role = connection->request_role; 7467 connection->request_role = HCI_ROLE_INVALID; 7468 hci_send_cmd(&hci_switch_role_command, connection->address, role); 7469 return true; 7470 } 7471 #endif 7472 7473 if (connection->gap_connection_tasks != 0){ 7474 #ifdef ENABLE_CLASSIC 7475 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 7476 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 7477 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 7478 return true; 7479 } 7480 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 7481 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 7482 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 7483 return true; 7484 } 7485 #endif 7486 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 7487 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 7488 hci_send_cmd(&hci_read_rssi, connection->con_handle); 7489 return true; 7490 } 7491 #ifdef ENABLE_BLE 7492 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES){ 7493 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_LE_READ_REMOTE_FEATURES; 7494 hci_send_cmd(&hci_le_read_remote_used_features, connection->con_handle); 7495 return true; 7496 } 7497 #endif 7498 } 7499 7500 #ifdef ENABLE_BLE 7501 switch (connection->le_con_parameter_update_state){ 7502 // response to L2CAP CON PARAMETER UPDATE REQUEST 7503 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 7504 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7505 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 7506 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7507 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7508 return true; 7509 case CON_PARAMETER_UPDATE_REPLY: 7510 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7511 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 7512 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 7513 hci_stack->le_minimum_ce_length, hci_stack->le_maximum_ce_length); 7514 return true; 7515 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 7516 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 7517 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 7518 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 7519 return true; 7520 default: 7521 break; 7522 } 7523 if (connection->le_phy_update_all_phys != 0xffu){ 7524 uint8_t all_phys = connection->le_phy_update_all_phys; 7525 connection->le_phy_update_all_phys = 0xff; 7526 hci_send_cmd(&hci_le_set_phy, connection->con_handle, all_phys, connection->le_phy_update_tx_phys, connection->le_phy_update_rx_phys, connection->le_phy_update_phy_options); 7527 return true; 7528 } 7529 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7530 if (connection->le_past_sync_handle != HCI_CON_HANDLE_INVALID){ 7531 hci_con_handle_t sync_handle = connection->le_past_sync_handle; 7532 connection->le_past_sync_handle = HCI_CON_HANDLE_INVALID; 7533 hci_send_cmd(&hci_le_periodic_advertising_sync_transfer, connection->con_handle, connection->le_past_service_data, sync_handle); 7534 return true; 7535 } 7536 if (connection->le_past_advertising_handle != 0xff){ 7537 uint8_t advertising_handle = connection->le_past_advertising_handle; 7538 connection->le_past_advertising_handle = 0xff; 7539 hci_send_cmd(&hci_le_periodic_advertising_set_info_transfer, connection->con_handle, connection->le_past_service_data, advertising_handle); 7540 return true; 7541 } 7542 #endif 7543 #endif 7544 } 7545 return false; 7546 } 7547 7548 static void hci_run(void){ 7549 7550 // stack state sub statemachines 7551 switch (hci_stack->state) { 7552 case HCI_STATE_INITIALIZING: 7553 hci_initializing_run(); 7554 break; 7555 case HCI_STATE_HALTING: 7556 hci_halting_run(); 7557 break; 7558 case HCI_STATE_FALLING_ASLEEP: 7559 hci_falling_asleep_run(); 7560 break; 7561 default: 7562 break; 7563 } 7564 7565 // allow to run after initialization to working transition 7566 if (hci_stack->state != HCI_STATE_WORKING){ 7567 return; 7568 } 7569 7570 bool done; 7571 7572 // send continuation fragments first, as they block the prepared packet buffer 7573 done = hci_run_acl_fragments(); 7574 if (done) return; 7575 7576 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7577 done = hci_run_iso_fragments(); 7578 if (done) return; 7579 #endif 7580 7581 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 7582 // send host num completed packets next as they don't require num_cmd_packets > 0 7583 if (!hci_can_send_comand_packet_transport()) return; 7584 if (hci_stack->host_completed_packets){ 7585 hci_host_num_completed_packets(); 7586 return; 7587 } 7588 #endif 7589 7590 if (!hci_can_send_command_packet_now()) return; 7591 7592 // global/non-connection oriented commands 7593 7594 7595 #ifdef ENABLE_CLASSIC 7596 // general gap classic 7597 done = hci_run_general_gap_classic(); 7598 if (done) return; 7599 #endif 7600 7601 #ifdef ENABLE_BLE 7602 // general gap le 7603 done = hci_run_general_gap_le(); 7604 if (done) return; 7605 7606 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 7607 // ISO related tasks, e.g. BIG create/terminate/sync 7608 done = hci_run_iso_tasks(); 7609 if (done) return; 7610 #endif 7611 #endif 7612 7613 // send pending HCI commands 7614 hci_run_general_pending_commands(); 7615 } 7616 7617 #ifdef ENABLE_CLASSIC 7618 static void hci_set_sco_payload_length_for_flipped_packet_types(hci_connection_t * hci_connection, uint16_t flipped_packet_types){ 7619 // bits 6-9 are 'don't use' 7620 uint16_t packet_types = flipped_packet_types ^ 0x03c0; 7621 7622 // restrict packet types to local and remote supported 7623 packet_types &= hci_connection->remote_supported_sco_packets & hci_stack->usable_packet_types_sco; 7624 hci_connection->sco_payload_length = hci_sco_payload_length_for_packet_types(packet_types); 7625 log_info("Possible SCO packet types 0x%04x => payload length %u", packet_types, hci_connection->sco_payload_length); 7626 } 7627 #endif 7628 7629 // funnel for sending cmd packet using single outgoing buffer 7630 static uint8_t hci_send_prepared_cmd_packet(void) { 7631 btstack_assert(hci_stack->hci_packet_buffer_reserved); 7632 // cache opcode 7633 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 7634 // get size 7635 uint16_t size = 3u + hci_stack->hci_packet_buffer[2u]; 7636 // send packet 7637 uint8_t status = hci_send_cmd_packet(hci_stack->hci_packet_buffer, size); 7638 // release packet buffer on error or for synchronous transport implementations 7639 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 7640 hci_release_packet_buffer(); 7641 } 7642 return status; 7643 } 7644 7645 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 7646 // house-keeping 7647 7648 #ifdef ENABLE_CLASSIC 7649 bd_addr_t addr; 7650 hci_connection_t * conn; 7651 #endif 7652 #ifdef ENABLE_LE_CENTRAL 7653 uint8_t initiator_filter_policy; 7654 #endif 7655 7656 uint16_t opcode = little_endian_read_16(packet, 0); 7657 switch (opcode) { 7658 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 7659 hci_stack->loopback_mode = packet[3]; 7660 break; 7661 7662 #ifdef ENABLE_CLASSIC 7663 case HCI_OPCODE_HCI_CREATE_CONNECTION: 7664 reverse_bd_addr(&packet[3], addr); 7665 log_info("Create_connection to %s", bd_addr_to_str(addr)); 7666 7667 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 7668 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 7669 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 7670 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 7671 } 7672 7673 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7674 if (!conn) { 7675 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 7676 if (!conn) { 7677 // notify client that alloc failed 7678 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7679 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 7680 } 7681 conn->state = SEND_CREATE_CONNECTION; 7682 } 7683 7684 log_info("conn state %u", conn->state); 7685 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 7686 switch (conn->state) { 7687 // if connection active exists 7688 case OPEN: 7689 // and OPEN, emit connection complete command 7690 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 7691 // packet not sent to controller 7692 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7693 case RECEIVED_DISCONNECTION_COMPLETE: 7694 // create connection triggered in disconnect complete event, let's do it now 7695 break; 7696 case SEND_CREATE_CONNECTION: 7697 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 7698 if (hci_classic_operation_active()){ 7699 return ERROR_CODE_SUCCESS; 7700 } 7701 #endif 7702 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 7703 break; 7704 default: 7705 // otherwise, just ignore as it is already in the open process 7706 // packet not sent to controller 7707 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7708 } 7709 conn->state = SENT_CREATE_CONNECTION; 7710 7711 // track outgoing connection 7712 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 7713 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7714 break; 7715 7716 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 7717 conn = hci_connection_for_handle(little_endian_read_16(packet, 3)); 7718 if (conn == NULL) { 7719 // neither SCO nor ACL connection for con handle 7720 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7721 } else { 7722 uint16_t remote_supported_sco_packets; 7723 switch (conn->address_type){ 7724 case BD_ADDR_TYPE_ACL: 7725 // assert SCO connection does not exit 7726 if (hci_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO) != NULL){ 7727 return ERROR_CODE_COMMAND_DISALLOWED; 7728 } 7729 // cache remote sco packet types 7730 remote_supported_sco_packets = conn->remote_supported_sco_packets; 7731 7732 // allocate connection struct 7733 conn = create_connection_for_bd_addr_and_type(conn->address, BD_ADDR_TYPE_SCO, 7734 HCI_ROLE_MASTER); 7735 if (!conn) { 7736 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7737 } 7738 conn->remote_supported_sco_packets = remote_supported_sco_packets; 7739 break; 7740 case BD_ADDR_TYPE_SCO: 7741 // update of existing SCO connection 7742 break; 7743 default: 7744 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7745 } 7746 } 7747 7748 // conn refers to hci connection of type sco now 7749 7750 conn->state = SENT_CREATE_CONNECTION; 7751 7752 // track outgoing connection to handle command status with error 7753 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7754 (void) memcpy(hci_stack->outgoing_addr, conn->address, 6); 7755 7756 // setup_synchronous_connection? Voice setting at offset 22 7757 // TODO: compare to current setting if sco connection already active 7758 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 7759 7760 // derive sco payload length from packet types 7761 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 18)); 7762 break; 7763 7764 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 7765 // get SCO connection 7766 reverse_bd_addr(&packet[3], addr); 7767 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 7768 if (conn == NULL){ 7769 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7770 } 7771 7772 conn->state = ACCEPTED_CONNECTION_REQUEST; 7773 7774 // track outgoing connection to handle command status with error 7775 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 7776 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 7777 7778 // accept_synchronous_connection? Voice setting at offset 18 7779 // TODO: compare to current setting if sco connection already active 7780 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 7781 7782 // derive sco payload length from packet types 7783 hci_set_sco_payload_length_for_flipped_packet_types(conn, little_endian_read_16(packet, 22)); 7784 break; 7785 #endif 7786 7787 #ifdef ENABLE_BLE 7788 #ifdef ENABLE_LE_CENTRAL 7789 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 7790 // white list used? 7791 initiator_filter_policy = packet[7]; 7792 switch (initiator_filter_policy) { 7793 case 0: 7794 // whitelist not used 7795 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7796 break; 7797 case 1: 7798 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7799 break; 7800 default: 7801 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7802 break; 7803 } 7804 // track outgoing connection 7805 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer address type 7806 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 7807 break; 7808 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7809 case HCI_OPCODE_HCI_LE_EXTENDED_CREATE_CONNECTION: 7810 // white list used? 7811 initiator_filter_policy = packet[3]; 7812 switch (initiator_filter_policy) { 7813 case 0: 7814 // whitelist not used 7815 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 7816 break; 7817 case 1: 7818 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 7819 break; 7820 default: 7821 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 7822 break; 7823 } 7824 // track outgoing connection 7825 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[5]; // peer address type 7826 reverse_bd_addr( &packet[6], hci_stack->outgoing_addr); // peer address 7827 break; 7828 #endif 7829 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 7830 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 7831 break; 7832 #endif 7833 #ifdef ENABLE_HCI_COMMAND_STATUS_DISCARDED_FOR_FAILED_CONNECTIONS_WORKAROUND 7834 case HCI_OPCODE_HCI_LE_CONNECTION_UPDATE: 7835 case HCI_OPCODE_HCI_LE_READ_REMOTE_USED_FEATURES: 7836 case HCI_OPCODE_HCI_LE_START_ENCRYPTION: 7837 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_REQUEST_REPLY: 7838 case HCI_OPCODE_HCI_LE_LONG_TERM_KEY_NEGATIVE_REPLY: 7839 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_REPLY: 7840 case HCI_OPCODE_HCI_LE_REMOTE_CONNECTION_PARAMETER_REQUEST_NEGATIVE_REPLY: 7841 case HCI_OPCODE_HCI_LE_SET_DATA_LENGTH: 7842 case HCI_OPCODE_HCI_LE_READ_PHY: 7843 case HCI_OPCODE_HCI_LE_SET_PHY: 7844 // conection handle is first command parameter 7845 hci_stack->hci_command_con_handle = little_endian_read_16(packet, 3); 7846 break; 7847 #endif 7848 #endif /* ENABLE_BLE */ 7849 default: 7850 break; 7851 } 7852 7853 hci_stack->num_cmd_packets--; 7854 7855 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 7856 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 7857 uint8_t status; 7858 if (err == 0){ 7859 status = ERROR_CODE_SUCCESS; 7860 } else { 7861 status = ERROR_CODE_HARDWARE_FAILURE; 7862 } 7863 return status; 7864 } 7865 7866 // disconnect because of security block 7867 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 7868 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7869 if (!connection) return; 7870 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 7871 } 7872 7873 7874 // Configure Secure Simple Pairing 7875 7876 #ifdef ENABLE_CLASSIC 7877 7878 // enable will enable SSP during init 7879 void gap_ssp_set_enable(int enable){ 7880 hci_stack->ssp_enable = enable; 7881 } 7882 7883 static int hci_local_ssp_activated(void){ 7884 return gap_ssp_supported() && hci_stack->ssp_enable; 7885 } 7886 7887 // if set, BTstack will respond to io capability request using authentication requirement 7888 void gap_ssp_set_io_capability(int io_capability){ 7889 hci_stack->ssp_io_capability = io_capability; 7890 } 7891 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 7892 hci_stack->ssp_authentication_requirement = authentication_requirement; 7893 } 7894 7895 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 7896 void gap_ssp_set_auto_accept(int auto_accept){ 7897 hci_stack->ssp_auto_accept = auto_accept; 7898 } 7899 7900 void gap_secure_connections_enable(bool enable){ 7901 hci_stack->secure_connections_enable = enable; 7902 } 7903 bool gap_secure_connections_active(void){ 7904 return hci_stack->secure_connections_active; 7905 } 7906 7907 #endif 7908 7909 // va_list part of hci_send_cmd 7910 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 7911 if (!hci_can_send_command_packet_now()){ 7912 log_error("hci_send_cmd called but cannot send packet now"); 7913 return ERROR_CODE_COMMAND_DISALLOWED; 7914 } 7915 7916 hci_reserve_packet_buffer(); 7917 hci_cmd_create_from_template(hci_stack->hci_packet_buffer, cmd, argptr); 7918 return hci_send_prepared_cmd_packet(); 7919 } 7920 7921 /** 7922 * pre: numcmds >= 0 - it's allowed to send a command to the controller 7923 */ 7924 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 7925 va_list argptr; 7926 va_start(argptr, cmd); 7927 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 7928 va_end(argptr); 7929 return status; 7930 } 7931 7932 // Forward HCI events and create non-HCI events 7933 7934 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 7935 // dump packet 7936 if (dump) { 7937 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 7938 } 7939 7940 // dispatch to all event handlers 7941 btstack_linked_list_iterator_t it; 7942 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 7943 while (btstack_linked_list_iterator_has_next(&it)){ 7944 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 7945 entry->callback(HCI_EVENT_PACKET, 0, event, size); 7946 } 7947 } 7948 7949 static void hci_emit_btstack_event(uint8_t * event, uint16_t size, int dump){ 7950 #ifndef ENABLE_LOG_BTSTACK_EVENTS 7951 dump = 0; 7952 #endif 7953 hci_emit_event(event, size, dump); 7954 } 7955 7956 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 7957 if (!hci_stack->acl_packet_handler) return; 7958 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 7959 } 7960 7961 #ifdef ENABLE_CLASSIC 7962 static void hci_notify_if_sco_can_send_now(void){ 7963 // notify SCO sender if waiting 7964 if (!hci_stack->sco_waiting_for_can_send_now) return; 7965 if (hci_can_send_sco_packet_now()){ 7966 hci_stack->sco_waiting_for_can_send_now = 0; 7967 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 7968 hci_dump_btstack_event(event, sizeof(event)); 7969 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 7970 } 7971 } 7972 7973 // parsing end emitting has been merged to reduce code size 7974 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 7975 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 7976 7977 uint8_t * eir_data; 7978 ad_context_t context; 7979 const uint8_t * name; 7980 uint8_t name_len; 7981 7982 if (size < 3) return; 7983 7984 int event_type = hci_event_packet_get_type(packet); 7985 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 7986 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 7987 7988 switch (event_type){ 7989 case HCI_EVENT_INQUIRY_RESULT: 7990 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7991 if (size != (3 + (num_responses * 14))) return; 7992 break; 7993 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7994 if (size != 257) return; 7995 if (num_responses != 1) return; 7996 break; 7997 default: 7998 return; 7999 } 8000 8001 // event[1] is set at the end 8002 int i; 8003 for (i=0; i<num_responses;i++){ 8004 memset(event, 0, sizeof(event)); 8005 event[0] = GAP_EVENT_INQUIRY_RESULT; 8006 uint8_t event_size = 27; // if name is not set by EIR 8007 8008 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 8009 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 8010 (void)memcpy(&event[9], 8011 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 8012 3); // class of device 8013 (void)memcpy(&event[12], 8014 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 8015 2); // clock offset 8016 8017 switch (event_type){ 8018 case HCI_EVENT_INQUIRY_RESULT: 8019 // 14,15,16,17 = 0, size 18 8020 break; 8021 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 8022 event[14] = 1; 8023 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 8024 // 16,17 = 0, size 18 8025 break; 8026 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 8027 event[14] = 1; 8028 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 8029 // EIR packets only contain a single inquiry response 8030 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 8031 name = NULL; 8032 // Iterate over EIR data 8033 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 8034 uint8_t data_type = ad_iterator_get_data_type(&context); 8035 uint8_t data_size = ad_iterator_get_data_len(&context); 8036 const uint8_t * data = ad_iterator_get_data(&context); 8037 // Prefer Complete Local Name over Shortened Local Name 8038 switch (data_type){ 8039 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 8040 if (name) continue; 8041 /* fall through */ 8042 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 8043 name = data; 8044 name_len = data_size; 8045 break; 8046 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 8047 if (data_size != 8) break; 8048 event[16] = 1; 8049 memcpy(&event[17], data, 8); 8050 break; 8051 default: 8052 break; 8053 } 8054 } 8055 if (name){ 8056 event[25] = 1; 8057 // truncate name if needed 8058 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 8059 event[26] = len; 8060 (void)memcpy(&event[27], name, len); 8061 event_size += len; 8062 } 8063 break; 8064 default: 8065 return; 8066 } 8067 event[1] = event_size - 2; 8068 hci_emit_btstack_event(event, event_size, 1); 8069 } 8070 } 8071 #endif 8072 8073 void hci_emit_state(void){ 8074 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 8075 uint8_t event[3]; 8076 event[0] = BTSTACK_EVENT_STATE; 8077 event[1] = sizeof(event) - 2u; 8078 event[2] = hci_stack->state; 8079 hci_emit_btstack_event(event, sizeof(event), 1); 8080 } 8081 8082 #ifdef ENABLE_CLASSIC 8083 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 8084 uint8_t event[13]; 8085 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 8086 event[1] = sizeof(event) - 2; 8087 event[2] = status; 8088 little_endian_store_16(event, 3, con_handle); 8089 reverse_bd_addr(address, &event[5]); 8090 event[11] = 1; // ACL connection 8091 event[12] = 0; // encryption disabled 8092 hci_emit_btstack_event(event, sizeof(event), 1); 8093 } 8094 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 8095 if (disable_l2cap_timeouts) return; 8096 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 8097 uint8_t event[4]; 8098 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 8099 event[1] = sizeof(event) - 2; 8100 little_endian_store_16(event, 2, conn->con_handle); 8101 hci_emit_btstack_event(event, sizeof(event), 1); 8102 } 8103 #endif 8104 8105 #ifdef ENABLE_BLE 8106 #ifdef ENABLE_LE_CENTRAL 8107 static void hci_emit_le_connection_complete(uint8_t address_type, const bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 8108 uint8_t hci_event[21]; 8109 hci_event[0] = HCI_EVENT_LE_META; 8110 hci_event[1] = sizeof(hci_event) - 2u; 8111 hci_event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 8112 hci_event[3] = status; 8113 little_endian_store_16(hci_event, 4, con_handle); 8114 hci_event[6] = 0; // TODO: role 8115 hci_event[7] = address_type; 8116 reverse_bd_addr(address, &hci_event[8]); 8117 little_endian_store_16(hci_event, 14, 0); // interval 8118 little_endian_store_16(hci_event, 16, 0); // latency 8119 little_endian_store_16(hci_event, 18, 0); // supervision timeout 8120 hci_event[20] = 0; // master clock accuracy 8121 hci_emit_btstack_event(hci_event, sizeof(hci_event), 1); 8122 // emit GAP event, too 8123 uint8_t gap_event[36]; 8124 hci_create_gap_connection_complete_event(hci_event, gap_event); 8125 hci_emit_btstack_event(gap_event, sizeof(gap_event), 1); 8126 } 8127 #endif 8128 #endif 8129 8130 static void hci_emit_transport_packet_sent(void){ 8131 // notify upper stack that it might be possible to send again 8132 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 8133 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 8134 } 8135 8136 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 8137 uint8_t event[6]; 8138 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 8139 event[1] = sizeof(event) - 2u; 8140 event[2] = 0; // status = OK 8141 little_endian_store_16(event, 3, con_handle); 8142 event[5] = reason; 8143 hci_emit_btstack_event(event, sizeof(event), 1); 8144 } 8145 8146 static void hci_emit_nr_connections_changed(void){ 8147 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 8148 uint8_t event[3]; 8149 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 8150 event[1] = sizeof(event) - 2u; 8151 event[2] = nr_hci_connections(); 8152 hci_emit_btstack_event(event, sizeof(event), 1); 8153 } 8154 8155 static void hci_emit_hci_open_failed(void){ 8156 log_info("BTSTACK_EVENT_POWERON_FAILED"); 8157 uint8_t event[2]; 8158 event[0] = BTSTACK_EVENT_POWERON_FAILED; 8159 event[1] = sizeof(event) - 2u; 8160 hci_emit_btstack_event(event, sizeof(event), 1); 8161 } 8162 8163 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 8164 log_info("hci_emit_dedicated_bonding_result %u ", status); 8165 uint8_t event[9]; 8166 int pos = 0; 8167 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 8168 event[pos++] = sizeof(event) - 2u; 8169 event[pos++] = status; 8170 reverse_bd_addr(address, &event[pos]); 8171 hci_emit_btstack_event(event, sizeof(event), 1); 8172 } 8173 8174 8175 #ifdef ENABLE_CLASSIC 8176 8177 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 8178 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 8179 uint8_t event[5]; 8180 int pos = 0; 8181 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 8182 event[pos++] = sizeof(event) - 2; 8183 little_endian_store_16(event, 2, con_handle); 8184 pos += 2; 8185 event[pos++] = level; 8186 hci_emit_btstack_event(event, sizeof(event), 1); 8187 } 8188 8189 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 8190 if (!connection) return LEVEL_0; 8191 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 8192 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 8193 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 8194 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 8195 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 8196 // LEVEL 4 always requires 128 bit encrytion key size 8197 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 8198 security_level = LEVEL_3; 8199 } 8200 return security_level; 8201 } 8202 8203 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 8204 uint8_t event[4]; 8205 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 8206 event[1] = sizeof(event) - 2; 8207 event[2] = discoverable; 8208 event[3] = connectable; 8209 hci_emit_btstack_event(event, sizeof(event), 1); 8210 } 8211 8212 // query if remote side supports eSCO 8213 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 8214 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8215 if (!connection) return false; 8216 return (connection->remote_supported_features[0] & 1) != 0; 8217 } 8218 8219 uint16_t hci_remote_sco_packet_types(hci_con_handle_t con_handle){ 8220 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8221 if (!connection) return 0; 8222 return connection->remote_supported_sco_packets; 8223 } 8224 8225 static bool hci_ssp_supported(hci_connection_t * connection){ 8226 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 8227 return (connection->bonding_flags & mask) == mask; 8228 } 8229 8230 // query if remote side supports SSP 8231 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 8232 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8233 if (!connection) return false; 8234 return hci_ssp_supported(connection) ? 1 : 0; 8235 } 8236 8237 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 8238 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 8239 } 8240 8241 /** 8242 * Check if remote supported features query has completed 8243 */ 8244 bool hci_remote_features_available(hci_con_handle_t handle){ 8245 hci_connection_t * connection = hci_connection_for_handle(handle); 8246 if (!connection) return false; 8247 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 8248 } 8249 8250 /** 8251 * Trigger remote supported features query 8252 */ 8253 8254 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 8255 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 8256 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 8257 } 8258 } 8259 8260 void hci_remote_features_query(hci_con_handle_t con_handle){ 8261 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8262 if (!connection) return; 8263 hci_trigger_remote_features_for_connection(connection); 8264 hci_run(); 8265 } 8266 8267 // GAP API 8268 /** 8269 * @bbrief enable/disable bonding. default is enabled 8270 * @praram enabled 8271 */ 8272 void gap_set_bondable_mode(int enable){ 8273 hci_stack->bondable = enable ? 1 : 0; 8274 } 8275 /** 8276 * @brief Get bondable mode. 8277 * @return 1 if bondable 8278 */ 8279 int gap_get_bondable_mode(void){ 8280 return hci_stack->bondable; 8281 } 8282 8283 /** 8284 * @brief map link keys to security levels 8285 */ 8286 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 8287 switch (link_key_type){ 8288 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8289 return LEVEL_4; 8290 case COMBINATION_KEY: 8291 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8292 return LEVEL_3; 8293 default: 8294 return LEVEL_2; 8295 } 8296 } 8297 8298 /** 8299 * @brief map link keys to secure connection yes/no 8300 */ 8301 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 8302 switch (link_key_type){ 8303 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8304 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8305 return true; 8306 default: 8307 return false; 8308 } 8309 } 8310 8311 /** 8312 * @brief map link keys to authenticated 8313 */ 8314 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 8315 switch (link_key_type){ 8316 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 8317 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 8318 return true; 8319 default: 8320 return false; 8321 } 8322 } 8323 8324 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 8325 log_info("gap_mitm_protection_required_for_security_level %u", level); 8326 return level > LEVEL_2; 8327 } 8328 8329 /** 8330 * @brief get current security level 8331 */ 8332 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 8333 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8334 if (!connection) return LEVEL_0; 8335 return gap_security_level_for_connection(connection); 8336 } 8337 8338 /** 8339 * @brief request connection to device to 8340 * @result GAP_AUTHENTICATION_RESULT 8341 */ 8342 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 8343 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8344 if (!connection){ 8345 hci_emit_security_level(con_handle, LEVEL_0); 8346 return; 8347 } 8348 8349 btstack_assert(hci_is_le_connection(connection) == false); 8350 8351 // Core Spec 5.2, GAP 5.2.2: "When in Secure Connections Only mode, all services (except those allowed to have Security Mode 4, Level 0) 8352 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 8353 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 8354 requested_level = LEVEL_4; 8355 } 8356 8357 gap_security_level_t current_level = gap_security_level(con_handle); 8358 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 8359 requested_level, connection->requested_security_level, current_level); 8360 8361 // authentication active if authentication request was sent or planned level > 0 8362 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 8363 if (authentication_active){ 8364 // authentication already active 8365 if (connection->requested_security_level < requested_level){ 8366 // increase requested level as new level is higher 8367 // TODO: handle re-authentication when done 8368 connection->requested_security_level = requested_level; 8369 } 8370 } else { 8371 // no request active, notify if security sufficient 8372 if (requested_level <= current_level){ 8373 hci_emit_security_level(con_handle, current_level); 8374 return; 8375 } 8376 8377 // store request 8378 connection->requested_security_level = requested_level; 8379 8380 // start to authenticate connection 8381 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 8382 8383 // request remote features if not already active, also trigger hci_run 8384 hci_remote_features_query(con_handle); 8385 } 8386 } 8387 8388 /** 8389 * @brief start dedicated bonding with device. disconnect after bonding 8390 * @param device 8391 * @param request MITM protection 8392 * @result GAP_DEDICATED_BONDING_COMPLETE 8393 */ 8394 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 8395 8396 // create connection state machine 8397 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL, HCI_ROLE_MASTER); 8398 8399 if (!connection){ 8400 return BTSTACK_MEMORY_ALLOC_FAILED; 8401 } 8402 8403 // delete link key 8404 gap_drop_link_key_for_bd_addr(device); 8405 8406 // configure LEVEL_2/3, dedicated bonding 8407 connection->state = SEND_CREATE_CONNECTION; 8408 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 8409 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 8410 connection->bonding_flags = BONDING_DEDICATED; 8411 8412 hci_run(); 8413 8414 return 0; 8415 } 8416 8417 uint8_t hci_dedicated_bonding_defer_disconnect(hci_con_handle_t con_handle, bool defer){ 8418 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8419 if (connection == NULL){ 8420 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8421 } 8422 if (defer){ 8423 connection->bonding_flags |= BONDING_DEDICATED_DEFER_DISCONNECT; 8424 } else { 8425 connection->bonding_flags &= ~BONDING_DEDICATED_DEFER_DISCONNECT; 8426 // trigger disconnect 8427 hci_run(); 8428 } 8429 return ERROR_CODE_SUCCESS; 8430 } 8431 8432 void gap_set_local_name(const char * local_name){ 8433 hci_stack->local_name = local_name; 8434 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 8435 // also update EIR if not set by user 8436 if (hci_stack->eir_data == NULL){ 8437 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8438 } 8439 hci_run(); 8440 } 8441 #endif 8442 8443 8444 #ifdef ENABLE_BLE 8445 8446 #ifdef ENABLE_LE_CENTRAL 8447 void gap_start_scan(void){ 8448 hci_stack->le_scanning_enabled = true; 8449 hci_run(); 8450 } 8451 8452 void gap_stop_scan(void){ 8453 hci_stack->le_scanning_enabled = false; 8454 hci_run(); 8455 } 8456 8457 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 8458 hci_stack->le_scan_type = scan_type; 8459 hci_stack->le_scan_filter_policy = scanning_filter_policy; 8460 hci_stack->le_scan_interval = scan_interval; 8461 hci_stack->le_scan_window = scan_window; 8462 hci_stack->le_scanning_param_update = true; 8463 hci_run(); 8464 } 8465 8466 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 8467 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 8468 } 8469 8470 void gap_set_scan_duplicate_filter(bool enabled){ 8471 hci_stack->le_scan_filter_duplicates = enabled ? 1 : 0; 8472 } 8473 8474 void gap_set_scan_phys(uint8_t phys){ 8475 // LE Coded and LE 1M PHY 8476 hci_stack->le_scan_phys = phys & 0x05; 8477 } 8478 8479 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type) { 8480 // disallow le connection if outgoing already active 8481 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8482 log_error("le connect already active"); 8483 return ERROR_CODE_COMMAND_DISALLOWED; 8484 } 8485 8486 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 8487 if (conn == NULL) { 8488 conn = create_connection_for_bd_addr_and_type(addr, addr_type, HCI_ROLE_MASTER); 8489 if (conn == false){ 8490 // alloc failed 8491 log_info("gap_connect: failed to alloc hci_connection_t"); 8492 return BTSTACK_MEMORY_ALLOC_FAILED; 8493 } 8494 } else { 8495 switch (conn->state) { 8496 case RECEIVED_DISCONNECTION_COMPLETE: 8497 // connection was just disconnected, reset state and allow re-connect 8498 conn->role = HCI_ROLE_MASTER; 8499 break; 8500 default: 8501 return ERROR_CODE_COMMAND_DISALLOWED; 8502 } 8503 } 8504 8505 // set le connecting state 8506 if (hci_is_le_connection_type(addr_type)){ 8507 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 8508 } 8509 8510 // trigger connect 8511 log_info("gap_connect: send create connection next"); 8512 conn->state = SEND_CREATE_CONNECTION; 8513 hci_run(); 8514 return ERROR_CODE_SUCCESS; 8515 } 8516 8517 // @assumption: only a single outgoing LE Connection exists 8518 static hci_connection_t * gap_get_outgoing_le_connection(void){ 8519 btstack_linked_item_t *it; 8520 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 8521 hci_connection_t * conn = (hci_connection_t *) it; 8522 if (hci_is_le_connection(conn)){ 8523 switch (conn->state){ 8524 case SEND_CREATE_CONNECTION: 8525 case SENT_CREATE_CONNECTION: 8526 return conn; 8527 default: 8528 break; 8529 }; 8530 } 8531 } 8532 return NULL; 8533 } 8534 8535 uint8_t gap_connect_cancel(void){ 8536 hci_connection_t * conn; 8537 switch (hci_stack->le_connecting_request){ 8538 case LE_CONNECTING_IDLE: 8539 break; 8540 case LE_CONNECTING_WHITELIST: 8541 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8542 hci_run(); 8543 break; 8544 case LE_CONNECTING_DIRECT: 8545 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8546 conn = gap_get_outgoing_le_connection(); 8547 if (conn == NULL){ 8548 hci_run(); 8549 } else { 8550 switch (conn->state){ 8551 case SEND_CREATE_CONNECTION: 8552 // skip sending create connection and emit event instead 8553 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 8554 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 8555 btstack_memory_hci_connection_free( conn ); 8556 break; 8557 case SENT_CREATE_CONNECTION: 8558 // let hci_run_general_gap_le cancel outgoing connection 8559 hci_run(); 8560 break; 8561 default: 8562 break; 8563 } 8564 } 8565 break; 8566 default: 8567 btstack_unreachable(); 8568 break; 8569 } 8570 return ERROR_CODE_SUCCESS; 8571 } 8572 8573 /** 8574 * @brief Set connection parameters for outgoing connections 8575 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 8576 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 8577 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 8578 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 8579 * @param conn_latency, default: 4 8580 * @param supervision_timeout (unit: 10ms), default: 720 ms 8581 * @param min_ce_length (unit: 0.625ms), default: 10 ms 8582 * @param max_ce_length (unit: 0.625ms), default: 30 ms 8583 */ 8584 8585 void gap_set_connection_phys(uint8_t phys){ 8586 // LE Coded, LE 1M, LE 2M PHY 8587 hci_stack->le_connection_phys = phys & 7; 8588 } 8589 8590 #endif 8591 8592 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 8593 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 8594 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 8595 hci_stack->le_connection_scan_interval = conn_scan_interval; 8596 hci_stack->le_connection_scan_window = conn_scan_window; 8597 hci_stack->le_connection_interval_min = conn_interval_min; 8598 hci_stack->le_connection_interval_max = conn_interval_max; 8599 hci_stack->le_connection_latency = conn_latency; 8600 hci_stack->le_supervision_timeout = supervision_timeout; 8601 hci_stack->le_minimum_ce_length = min_ce_length; 8602 hci_stack->le_maximum_ce_length = max_ce_length; 8603 } 8604 8605 /** 8606 * @brief Updates the connection parameters for a given LE connection 8607 * @param handle 8608 * @param conn_interval_min (unit: 1.25ms) 8609 * @param conn_interval_max (unit: 1.25ms) 8610 * @param conn_latency 8611 * @param supervision_timeout (unit: 10ms) 8612 * @return 0 if ok 8613 */ 8614 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8615 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8616 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8617 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8618 connection->le_conn_interval_min = conn_interval_min; 8619 connection->le_conn_interval_max = conn_interval_max; 8620 connection->le_conn_latency = conn_latency; 8621 connection->le_supervision_timeout = supervision_timeout; 8622 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 8623 hci_run(); 8624 return 0; 8625 } 8626 8627 /** 8628 * @brief Request an update of the connection parameter for a given LE connection 8629 * @param handle 8630 * @param conn_interval_min (unit: 1.25ms) 8631 * @param conn_interval_max (unit: 1.25ms) 8632 * @param conn_latency 8633 * @param supervision_timeout (unit: 10ms) 8634 * @return 0 if ok 8635 */ 8636 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 8637 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 8638 hci_connection_t * connection = hci_connection_for_handle(con_handle); 8639 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8640 connection->le_conn_interval_min = conn_interval_min; 8641 connection->le_conn_interval_max = conn_interval_max; 8642 connection->le_conn_latency = conn_latency; 8643 connection->le_supervision_timeout = supervision_timeout; 8644 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 8645 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 8646 hci_emit_btstack_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 8647 return 0; 8648 } 8649 8650 #ifdef ENABLE_LE_PERIPHERAL 8651 8652 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8653 static void hci_assert_advertisement_set_0_ready(void){ 8654 // force advertising set creation for legacy LE Advertising 8655 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) == 0){ 8656 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8657 } 8658 } 8659 #endif 8660 8661 /** 8662 * @brief Set Advertisement Data 8663 * @param advertising_data_length 8664 * @param advertising_data (max 31 octets) 8665 * @note data is not copied, pointer has to stay valid 8666 */ 8667 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 8668 hci_stack->le_advertisements_data_len = advertising_data_length; 8669 hci_stack->le_advertisements_data = advertising_data; 8670 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8671 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8672 hci_assert_advertisement_set_0_ready(); 8673 #endif 8674 hci_run(); 8675 } 8676 8677 /** 8678 * @brief Set Scan Response Data 8679 * @param advertising_data_length 8680 * @param advertising_data (max 31 octets) 8681 * @note data is not copied, pointer has to stay valid 8682 */ 8683 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 8684 hci_stack->le_scan_response_data_len = scan_response_data_length; 8685 hci_stack->le_scan_response_data = scan_response_data; 8686 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8687 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8688 hci_assert_advertisement_set_0_ready(); 8689 #endif 8690 hci_run(); 8691 } 8692 8693 /** 8694 * @brief Set Advertisement Parameters 8695 * @param adv_int_min 8696 * @param adv_int_max 8697 * @param adv_type 8698 * @param direct_address_type 8699 * @param direct_address 8700 * @param channel_map 8701 * @param filter_policy 8702 * 8703 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 8704 */ 8705 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 8706 uint8_t direct_address_typ, bd_addr_t direct_address, 8707 uint8_t channel_map, uint8_t filter_policy) { 8708 8709 hci_stack->le_advertisements_interval_min = adv_int_min; 8710 hci_stack->le_advertisements_interval_max = adv_int_max; 8711 hci_stack->le_advertisements_type = adv_type; 8712 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 8713 hci_stack->le_advertisements_channel_map = channel_map; 8714 hci_stack->le_advertisements_filter_policy = filter_policy; 8715 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 8716 6); 8717 8718 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8719 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 8720 hci_run(); 8721 } 8722 8723 /** 8724 * @brief Enable/Disable Advertisements 8725 * @param enabled 8726 */ 8727 void gap_advertisements_enable(int enabled){ 8728 if (enabled == 0){ 8729 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8730 } else { 8731 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 8732 } 8733 hci_update_advertisements_enabled_for_current_roles(); 8734 hci_run(); 8735 } 8736 8737 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8738 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 8739 btstack_linked_list_iterator_t it; 8740 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 8741 while (btstack_linked_list_iterator_has_next(&it)){ 8742 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 8743 if ( item->advertising_handle == advertising_handle ) { 8744 return item; 8745 } 8746 } 8747 return NULL; 8748 } 8749 8750 uint8_t gap_extended_advertising_set_resolvable_private_address_update(uint16_t update_s){ 8751 hci_stack->le_resolvable_private_address_update_s = update_s; 8752 hci_run(); 8753 return ERROR_CODE_SUCCESS; 8754 } 8755 8756 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 8757 // find free advertisement handle 8758 uint8_t advertisement_handle; 8759 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 8760 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 8761 } 8762 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8763 // clear 8764 memset(storage, 0, sizeof(le_advertising_set_t)); 8765 // copy params 8766 storage->advertising_handle = advertisement_handle; 8767 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8768 // add to list 8769 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 8770 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 8771 *out_advertising_handle = advertisement_handle; 8772 // set tasks and start 8773 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8774 hci_run(); 8775 return ERROR_CODE_SUCCESS; 8776 } 8777 8778 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 8779 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8780 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8781 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 8782 // set tasks and start 8783 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8784 hci_run(); 8785 return ERROR_CODE_SUCCESS; 8786 } 8787 8788 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 8789 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8790 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8791 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 8792 return ERROR_CODE_SUCCESS; 8793 } 8794 8795 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 8796 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8797 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8798 memcpy(advertising_set->random_address, random_address, 6); 8799 // set tasks and start 8800 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 8801 hci_run(); 8802 return ERROR_CODE_SUCCESS; 8803 } 8804 8805 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 8806 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8807 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8808 advertising_set->adv_data = advertising_data; 8809 advertising_set->adv_data_len = advertising_data_length; 8810 // set tasks and start 8811 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 8812 hci_run(); 8813 return ERROR_CODE_SUCCESS; 8814 } 8815 8816 uint8_t gap_extended_advertising_set_scan_response_data(uint8_t advertising_handle, uint16_t scan_response_data_length, const uint8_t * scan_response_data){ 8817 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8818 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8819 advertising_set->scan_data = scan_response_data; 8820 advertising_set->scan_data_len = scan_response_data_length; 8821 // set tasks and start 8822 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 8823 hci_run(); 8824 return ERROR_CODE_SUCCESS; 8825 } 8826 8827 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 8828 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8829 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8830 advertising_set->enable_timeout = timeout; 8831 advertising_set->enable_max_scan_events = num_extended_advertising_events; 8832 // set tasks and start 8833 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 8834 hci_run(); 8835 return ERROR_CODE_SUCCESS; 8836 } 8837 8838 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 8839 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8840 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8841 // set tasks and start 8842 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 8843 hci_run(); 8844 return ERROR_CODE_SUCCESS; 8845 } 8846 8847 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 8848 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8849 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8850 // set tasks and start 8851 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 8852 hci_run(); 8853 return ERROR_CODE_SUCCESS; 8854 } 8855 8856 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 8857 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 8858 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8859 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8860 // periodic advertising requires neither connectable, scannable, legacy or anonymous 8861 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8862 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 8863 // set tasks and start 8864 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 8865 hci_run(); 8866 return ERROR_CODE_SUCCESS; 8867 } 8868 8869 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 8870 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8871 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8872 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 8873 return ERROR_CODE_SUCCESS; 8874 } 8875 8876 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 8877 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8878 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8879 advertising_set->periodic_data = periodic_data; 8880 advertising_set->periodic_data_len = periodic_data_length; 8881 // set tasks and start 8882 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 8883 hci_run(); 8884 return ERROR_CODE_SUCCESS; 8885 } 8886 8887 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 8888 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8889 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8890 // set tasks and start 8891 advertising_set->periodic_include_adi = include_adi; 8892 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8893 hci_run(); 8894 return ERROR_CODE_SUCCESS; 8895 } 8896 8897 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 8898 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 8899 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8900 // set tasks and start 8901 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 8902 hci_run(); 8903 return ERROR_CODE_SUCCESS; 8904 } 8905 8906 uint8_t gap_periodic_advertising_sync_transfer_set_default_parameters(uint8_t mode, uint16_t skip, uint16_t sync_timeout, uint8_t cte_type){ 8907 hci_stack->le_past_mode = mode; 8908 hci_stack->le_past_skip = skip; 8909 hci_stack->le_past_sync_timeout = sync_timeout; 8910 hci_stack->le_past_cte_type = cte_type; 8911 hci_stack->le_past_set_default_params = true; 8912 hci_run(); 8913 return ERROR_CODE_SUCCESS; 8914 } 8915 8916 uint8_t gap_periodic_advertising_sync_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, hci_con_handle_t sync_handle){ 8917 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8918 if (hci_connection == NULL){ 8919 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8920 } 8921 hci_connection->le_past_sync_handle = sync_handle; 8922 hci_connection->le_past_service_data = service_data; 8923 hci_run(); 8924 return ERROR_CODE_SUCCESS; 8925 } 8926 8927 uint8_t gap_periodic_advertising_set_info_transfer_send(hci_con_handle_t con_handle, uint16_t service_data, uint8_t advertising_handle){ 8928 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8929 if (hci_connection == NULL){ 8930 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8931 } 8932 hci_connection->le_past_advertising_handle = advertising_handle; 8933 hci_connection->le_past_service_data = service_data; 8934 hci_run(); 8935 return ERROR_CODE_SUCCESS; 8936 } 8937 8938 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 8939 8940 #endif 8941 8942 #endif 8943 8944 void hci_le_set_own_address_type(uint8_t own_address_type){ 8945 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 8946 if (own_address_type == hci_stack->le_own_addr_type) return; 8947 hci_stack->le_own_addr_type = own_address_type; 8948 8949 #ifdef ENABLE_LE_PERIPHERAL 8950 // update advertisement parameters, too 8951 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 8952 hci_run(); 8953 #endif 8954 #ifdef ENABLE_LE_CENTRAL 8955 // note: we don't update scan parameters or modify ongoing connection attempts 8956 #endif 8957 } 8958 8959 void hci_le_random_address_set(const bd_addr_t random_address){ 8960 log_info("gap_privacy: hci_le_random_address_set %s", bd_addr_to_str(random_address)); 8961 memcpy(hci_stack->le_random_address, random_address, 6); 8962 hci_stack->le_random_address_set = true; 8963 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS | LE_ADVERTISEMENT_TASKS_PRIVACY_NOTIFY; 8964 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8965 if (hci_le_extended_advertising_supported()){ 8966 hci_assert_advertisement_set_0_ready(); 8967 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS_SET_0; 8968 } 8969 #endif 8970 hci_run(); 8971 } 8972 8973 #endif 8974 8975 uint8_t gap_disconnect(hci_con_handle_t handle){ 8976 hci_connection_t * conn = hci_connection_for_handle(handle); 8977 if (!conn){ 8978 hci_emit_disconnection_complete(handle, 0); 8979 return 0; 8980 } 8981 // ignore if already disconnected 8982 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 8983 return 0; 8984 } 8985 conn->state = SEND_DISCONNECT; 8986 hci_run(); 8987 return 0; 8988 } 8989 8990 int gap_read_rssi(hci_con_handle_t con_handle){ 8991 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8992 if (hci_connection == NULL) return 0; 8993 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 8994 hci_run(); 8995 return 1; 8996 } 8997 8998 /** 8999 * @brief Get connection type 9000 * @param con_handle 9001 * @result connection_type 9002 */ 9003 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 9004 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 9005 if (!conn) return GAP_CONNECTION_INVALID; 9006 switch (conn->address_type){ 9007 case BD_ADDR_TYPE_LE_PUBLIC: 9008 case BD_ADDR_TYPE_LE_RANDOM: 9009 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9010 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9011 return GAP_CONNECTION_LE; 9012 case BD_ADDR_TYPE_SCO: 9013 return GAP_CONNECTION_SCO; 9014 case BD_ADDR_TYPE_ACL: 9015 return GAP_CONNECTION_ACL; 9016 default: 9017 return GAP_CONNECTION_INVALID; 9018 } 9019 } 9020 9021 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 9022 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 9023 if (!conn) return HCI_ROLE_INVALID; 9024 return (hci_role_t) conn->role; 9025 } 9026 9027 9028 #ifdef ENABLE_CLASSIC 9029 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 9030 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9031 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9032 conn->request_role = role; 9033 hci_run(); 9034 return ERROR_CODE_SUCCESS; 9035 } 9036 #endif 9037 9038 #ifdef ENABLE_BLE 9039 9040 uint8_t gap_le_set_phy(hci_con_handle_t con_handle, uint8_t all_phys, uint8_t tx_phys, uint8_t rx_phys, uint16_t phy_options){ 9041 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9042 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9043 9044 conn->le_phy_update_all_phys = all_phys; 9045 conn->le_phy_update_tx_phys = tx_phys; 9046 conn->le_phy_update_rx_phys = rx_phys; 9047 conn->le_phy_update_phy_options = (uint8_t) phy_options; 9048 9049 hci_run(); 9050 9051 return 0; 9052 } 9053 9054 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9055 9056 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_WHITELIST_ENTRIES) || (MAX_NR_WHITELIST_ENTRIES == 0)) 9057 // incorrect configuration: 9058 // - as MAX_NR_WHITELIST_ENTRIES is not defined or zero this function always fails 9059 // - please set MAX_NR_WHITELIST_ENTRIES in btstack_config.h 9060 btstack_assert(false); 9061 #endif 9062 9063 // check if already in list 9064 btstack_linked_list_iterator_t it; 9065 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9066 while (btstack_linked_list_iterator_has_next(&it)) { 9067 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 9068 if (entry->address_type != address_type) { 9069 continue; 9070 } 9071 if (memcmp(entry->address, address, 6) != 0) { 9072 continue; 9073 } 9074 9075 // if already on controller: 9076 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) != 0){ 9077 if ((entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER) != 0){ 9078 // drop remove request 9079 entry->state = LE_WHITELIST_ON_CONTROLLER; 9080 return ERROR_CODE_SUCCESS; 9081 } else { 9082 // disallow as already on controller 9083 return ERROR_CODE_COMMAND_DISALLOWED; 9084 } 9085 } 9086 9087 // assume scheduled to add 9088 return ERROR_CODE_COMMAND_DISALLOWED; 9089 } 9090 9091 // alloc and add to list 9092 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 9093 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9094 entry->address_type = address_type; 9095 (void)memcpy(entry->address, address, 6); 9096 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 9097 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 9098 return ERROR_CODE_SUCCESS; 9099 } 9100 9101 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9102 btstack_linked_list_iterator_t it; 9103 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9104 while (btstack_linked_list_iterator_has_next(&it)){ 9105 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9106 if (entry->address_type != address_type) { 9107 continue; 9108 } 9109 if (memcmp(entry->address, address, 6) != 0) { 9110 continue; 9111 } 9112 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9113 // remove from controller if already present 9114 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9115 } else { 9116 // directly remove entry from whitelist 9117 btstack_linked_list_iterator_remove(&it); 9118 btstack_memory_whitelist_entry_free(entry); 9119 } 9120 return ERROR_CODE_SUCCESS; 9121 } 9122 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9123 } 9124 9125 static void hci_whitelist_clear(void){ 9126 btstack_linked_list_iterator_t it; 9127 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 9128 while (btstack_linked_list_iterator_has_next(&it)){ 9129 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 9130 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 9131 // remove from controller if already present 9132 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 9133 continue; 9134 } 9135 // directly remove entry from whitelist 9136 btstack_linked_list_iterator_remove(&it); 9137 btstack_memory_whitelist_entry_free(entry); 9138 } 9139 } 9140 9141 /** 9142 * @brief Clear Whitelist 9143 * @return 0 if ok 9144 */ 9145 uint8_t gap_whitelist_clear(void){ 9146 hci_whitelist_clear(); 9147 hci_run(); 9148 return ERROR_CODE_SUCCESS; 9149 } 9150 9151 /** 9152 * @brief Add Device to Whitelist 9153 * @param address_typ 9154 * @param address 9155 * @return 0 if ok 9156 */ 9157 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 9158 uint8_t status = hci_whitelist_add(address_type, address); 9159 if (status){ 9160 return status; 9161 } 9162 hci_run(); 9163 return ERROR_CODE_SUCCESS; 9164 } 9165 9166 /** 9167 * @brief Remove Device from Whitelist 9168 * @param address_typ 9169 * @param address 9170 * @return 0 if ok 9171 */ 9172 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 9173 uint8_t status = hci_whitelist_remove(address_type, address); 9174 if (status){ 9175 return status; 9176 } 9177 hci_run(); 9178 return ERROR_CODE_SUCCESS; 9179 } 9180 9181 #ifdef ENABLE_LE_CENTRAL 9182 /** 9183 * @brief Connect with Whitelist 9184 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 9185 * @return - if ok 9186 */ 9187 uint8_t gap_connect_with_whitelist(void){ 9188 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 9189 return ERROR_CODE_COMMAND_DISALLOWED; 9190 } 9191 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9192 hci_run(); 9193 return ERROR_CODE_SUCCESS; 9194 } 9195 9196 /** 9197 * @brief Auto Connection Establishment - Start Connecting to device 9198 * @param address_typ 9199 * @param address 9200 * @return 0 if ok 9201 */ 9202 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 9203 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9204 return ERROR_CODE_COMMAND_DISALLOWED; 9205 } 9206 9207 uint8_t status = hci_whitelist_add(address_type, address); 9208 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 9209 return status; 9210 } 9211 9212 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 9213 9214 hci_run(); 9215 return ERROR_CODE_SUCCESS; 9216 } 9217 9218 /** 9219 * @brief Auto Connection Establishment - Stop Connecting to device 9220 * @param address_typ 9221 * @param address 9222 * @return 0 if ok 9223 */ 9224 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 9225 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 9226 return ERROR_CODE_COMMAND_DISALLOWED; 9227 } 9228 9229 hci_whitelist_remove(address_type, address); 9230 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 9231 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9232 } 9233 hci_run(); 9234 return 0; 9235 } 9236 9237 /** 9238 * @brief Auto Connection Establishment - Stop everything 9239 * @note Convenience function to stop all active auto connection attempts 9240 */ 9241 uint8_t gap_auto_connection_stop_all(void){ 9242 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 9243 return ERROR_CODE_COMMAND_DISALLOWED; 9244 } 9245 hci_whitelist_clear(); 9246 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 9247 hci_run(); 9248 return ERROR_CODE_SUCCESS; 9249 } 9250 9251 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 9252 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9253 if (!conn) return 0; 9254 return conn->le_connection_interval; 9255 } 9256 #endif 9257 #endif 9258 9259 #ifdef ENABLE_CLASSIC 9260 /** 9261 * @brief Set Extended Inquiry Response data 9262 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 9263 * @note has to be done before stack starts up 9264 */ 9265 void gap_set_extended_inquiry_response(const uint8_t * data){ 9266 hci_stack->eir_data = data; 9267 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 9268 hci_run(); 9269 } 9270 9271 /** 9272 * @brief Start GAP Classic Inquiry 9273 * @param duration in 1.28s units 9274 * @return 0 if ok 9275 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 9276 */ 9277 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 9278 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9279 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9280 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 9281 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9282 } 9283 hci_stack->inquiry_state = duration_in_1280ms_units; 9284 hci_stack->inquiry_max_period_length = 0; 9285 hci_stack->inquiry_min_period_length = 0; 9286 hci_run(); 9287 return 0; 9288 } 9289 9290 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 9291 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 9292 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9293 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9294 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9295 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9296 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 9297 9298 hci_stack->inquiry_state = duration; 9299 hci_stack->inquiry_max_period_length = max_period_length; 9300 hci_stack->inquiry_min_period_length = min_period_length; 9301 hci_run(); 9302 return 0; 9303 } 9304 9305 /** 9306 * @brief Stop GAP Classic Inquiry 9307 * @return 0 if ok 9308 */ 9309 int gap_inquiry_stop(void){ 9310 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 9311 // emit inquiry complete event, before it even started 9312 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 9313 hci_emit_btstack_event(event, sizeof(event), 1); 9314 return 0; 9315 } 9316 switch (hci_stack->inquiry_state){ 9317 case GAP_INQUIRY_STATE_ACTIVE: 9318 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 9319 hci_run(); 9320 return ERROR_CODE_SUCCESS; 9321 case GAP_INQUIRY_STATE_PERIODIC: 9322 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 9323 hci_run(); 9324 return ERROR_CODE_SUCCESS; 9325 default: 9326 return ERROR_CODE_COMMAND_DISALLOWED; 9327 } 9328 } 9329 9330 void gap_inquiry_set_lap(uint32_t lap){ 9331 hci_stack->inquiry_lap = lap; 9332 } 9333 9334 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 9335 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 9336 hci_stack->inquiry_scan_window = inquiry_scan_window; 9337 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 9338 hci_run(); 9339 } 9340 9341 void gap_inquiry_set_transmit_power_level(int8_t tx_power) 9342 { 9343 hci_stack->inquiry_tx_power_level = tx_power; 9344 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_TX_POWER_LEVEL; 9345 hci_run(); 9346 } 9347 9348 9349 /** 9350 * @brief Remote Name Request 9351 * @param addr 9352 * @param page_scan_repetition_mode 9353 * @param clock_offset only used when bit 15 is set 9354 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 9355 */ 9356 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 9357 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9358 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 9359 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 9360 hci_stack->remote_name_clock_offset = clock_offset; 9361 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 9362 hci_run(); 9363 return 0; 9364 } 9365 9366 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 9367 hci_stack->gap_pairing_state = state; 9368 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 9369 hci_run(); 9370 return 0; 9371 } 9372 9373 /** 9374 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 9375 * @param addr 9376 * @param pin_data 9377 * @param pin_len 9378 * @return 0 if ok 9379 */ 9380 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 9381 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9382 if (pin_len > PIN_CODE_LEN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9383 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 9384 hci_stack->gap_pairing_pin_len = pin_len; 9385 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 9386 } 9387 9388 /** 9389 * @brief Legacy Pairing Pin Code Response 9390 * @param addr 9391 * @param pin 9392 * @return 0 if ok 9393 */ 9394 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 9395 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 9396 } 9397 9398 /** 9399 * @brief Abort Legacy Pairing 9400 * @param addr 9401 * @param pin 9402 * @return 0 if ok 9403 */ 9404 int gap_pin_code_negative(bd_addr_t addr){ 9405 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9406 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 9407 } 9408 9409 /** 9410 * @brief SSP Passkey Response 9411 * @param addr 9412 * @param passkey 9413 * @return 0 if ok 9414 */ 9415 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 9416 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9417 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 9418 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 9419 } 9420 9421 /** 9422 * @brief Abort SSP Passkey Entry/Pairing 9423 * @param addr 9424 * @param pin 9425 * @return 0 if ok 9426 */ 9427 int gap_ssp_passkey_negative(const bd_addr_t addr){ 9428 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9429 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 9430 } 9431 9432 /** 9433 * @brief Accept SSP Numeric Comparison 9434 * @param addr 9435 * @param passkey 9436 * @return 0 if ok 9437 */ 9438 int gap_ssp_confirmation_response(const bd_addr_t addr){ 9439 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9440 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 9441 } 9442 9443 /** 9444 * @brief Abort SSP Numeric Comparison/Pairing 9445 * @param addr 9446 * @param pin 9447 * @return 0 if ok 9448 */ 9449 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 9450 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 9451 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 9452 } 9453 9454 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 9455 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 9456 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9457 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9458 connectionSetAuthenticationFlags(conn, flag); 9459 hci_run(); 9460 return ERROR_CODE_SUCCESS; 9461 } 9462 #endif 9463 9464 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 9465 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 9466 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 9467 } 9468 9469 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 9470 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 9471 } 9472 #endif 9473 9474 #ifdef ENABLE_CLASSIC_PAIRING_OOB 9475 /** 9476 * @brief Report Remote OOB Data 9477 * @param bd_addr 9478 * @param c_192 Simple Pairing Hash C derived from P-192 public key 9479 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 9480 * @param c_256 Simple Pairing Hash C derived from P-256 public key 9481 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 9482 */ 9483 uint8_t gap_ssp_remote_oob_data(const bd_addr_t addr, const uint8_t * c_192, const uint8_t * r_192, const uint8_t * c_256, const uint8_t * r_256){ 9484 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9485 if (connection == NULL) { 9486 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9487 } 9488 connection->classic_oob_c_192 = c_192; 9489 connection->classic_oob_r_192 = r_192; 9490 9491 // ignore P-256 if not supported by us 9492 if (hci_stack->secure_connections_active){ 9493 connection->classic_oob_c_256 = c_256; 9494 connection->classic_oob_r_256 = r_256; 9495 } 9496 9497 return ERROR_CODE_SUCCESS; 9498 } 9499 /** 9500 * @brief Generate new OOB data 9501 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 9502 */ 9503 void gap_ssp_generate_oob_data(void){ 9504 hci_stack->classic_read_local_oob_data = true; 9505 hci_run(); 9506 } 9507 9508 #endif 9509 9510 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 9511 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 9512 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9513 if (connection == NULL) { 9514 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9515 } 9516 9517 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 9518 connection->link_key_type = type; 9519 9520 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 9521 } 9522 9523 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 9524 /** 9525 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 9526 * @param inquiry_mode see bluetooth_defines.h 9527 */ 9528 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 9529 hci_stack->inquiry_mode = inquiry_mode; 9530 } 9531 9532 /** 9533 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 9534 */ 9535 void hci_set_sco_voice_setting(uint16_t voice_setting){ 9536 hci_stack->sco_voice_setting = voice_setting; 9537 } 9538 9539 /** 9540 * @brief Get SCO Voice Setting 9541 * @return current voice setting 9542 */ 9543 uint16_t hci_get_sco_voice_setting(void){ 9544 return hci_stack->sco_voice_setting; 9545 } 9546 9547 static int hci_have_usb_transport(void){ 9548 if (!hci_stack->hci_transport) return 0; 9549 const char * transport_name = hci_stack->hci_transport->name; 9550 if (!transport_name) return 0; 9551 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 9552 } 9553 9554 static uint16_t hci_sco_packet_length_for_payload_length(uint16_t payload_size){ 9555 uint16_t sco_packet_length = 0; 9556 9557 #if defined(ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 9558 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 9559 int multiplier; 9560 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && 9561 ((hci_stack->sco_voice_setting_active & 0x20) == 0x20)) { 9562 multiplier = 2; 9563 } else { 9564 multiplier = 1; 9565 } 9566 #endif 9567 9568 #ifdef ENABLE_SCO_OVER_HCI 9569 if (hci_have_usb_transport()){ 9570 // see Core Spec for H2 USB Transfer. 9571 // 3 byte SCO header + 24 bytes per connection 9572 // @note multiple sco connections not supported currently 9573 sco_packet_length = 3 + 24 * multiplier; 9574 } else { 9575 // 3 byte SCO header + SCO packet length over the air 9576 sco_packet_length = 3 + payload_size * multiplier; 9577 // assert that it still fits inside an SCO buffer 9578 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9579 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9580 } 9581 } 9582 #endif 9583 #ifdef HAVE_SCO_TRANSPORT 9584 // 3 byte SCO header + SCO packet length over the air 9585 sco_packet_length = 3 + payload_size * multiplier; 9586 // assert that it still fits inside an SCO buffer 9587 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 9588 sco_packet_length = 3 + hci_stack->sco_data_packet_length; 9589 } 9590 #endif 9591 return sco_packet_length; 9592 } 9593 9594 uint16_t hci_get_sco_packet_length_for_connection(hci_con_handle_t sco_con_handle){ 9595 hci_connection_t * connection = hci_connection_for_handle(sco_con_handle); 9596 if (connection != NULL){ 9597 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length); 9598 } 9599 return 0; 9600 } 9601 9602 uint16_t hci_get_sco_packet_length(void){ 9603 btstack_linked_list_iterator_t it; 9604 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9605 while (btstack_linked_list_iterator_has_next(&it)){ 9606 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 9607 if ( connection->address_type == BD_ADDR_TYPE_SCO ) { 9608 return hci_sco_packet_length_for_payload_length(connection->sco_payload_length);; 9609 } 9610 } 9611 return 0; 9612 } 9613 9614 /** 9615 * @brief Sets the master/slave policy 9616 * @param policy (0: attempt to become master, 1: let connecting device decide) 9617 */ 9618 void hci_set_master_slave_policy(uint8_t policy){ 9619 hci_stack->master_slave_policy = policy; 9620 } 9621 9622 #endif 9623 9624 HCI_STATE hci_get_state(void){ 9625 return hci_stack->state; 9626 } 9627 9628 #ifdef ENABLE_CLASSIC 9629 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 9630 hci_stack->gap_classic_accept_callback = accept_callback; 9631 } 9632 #endif 9633 9634 /** 9635 * @brief Set callback for Bluetooth Hardware Error 9636 */ 9637 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 9638 hci_stack->hardware_error_callback = fn; 9639 } 9640 9641 void hci_disconnect_all(void){ 9642 btstack_linked_list_iterator_t it; 9643 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9644 while (btstack_linked_list_iterator_has_next(&it)){ 9645 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9646 if (con->state == SENT_DISCONNECT) continue; 9647 con->state = SEND_DISCONNECT; 9648 } 9649 hci_run(); 9650 } 9651 9652 uint16_t hci_get_manufacturer(void){ 9653 return hci_stack->manufacturer; 9654 } 9655 9656 #ifdef ENABLE_BLE 9657 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 9658 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 9659 if (!hci_con) return NULL; 9660 return &hci_con->sm_connection; 9661 } 9662 9663 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 9664 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 9665 #endif 9666 9667 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 9668 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9669 if (hci_connection == NULL) return 0; 9670 if (hci_is_le_connection(hci_connection)){ 9671 #ifdef ENABLE_BLE 9672 sm_connection_t * sm_conn = &hci_connection->sm_connection; 9673 if (sm_conn->sm_connection_encrypted != 0u) { 9674 return sm_conn->sm_actual_encryption_key_size; 9675 } 9676 #endif 9677 } else { 9678 #ifdef ENABLE_CLASSIC 9679 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 9680 return hci_connection->encryption_key_size; 9681 } 9682 #endif 9683 } 9684 return 0; 9685 } 9686 9687 bool gap_authenticated(hci_con_handle_t con_handle){ 9688 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9689 if (hci_connection == NULL) return false; 9690 9691 switch (hci_connection->address_type){ 9692 #ifdef ENABLE_BLE 9693 case BD_ADDR_TYPE_LE_PUBLIC: 9694 case BD_ADDR_TYPE_LE_RANDOM: 9695 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9696 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9697 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 9698 return hci_connection->sm_connection.sm_connection_authenticated != 0; 9699 #endif 9700 #ifdef ENABLE_CLASSIC 9701 case BD_ADDR_TYPE_SCO: 9702 case BD_ADDR_TYPE_ACL: 9703 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 9704 #endif 9705 default: 9706 return false; 9707 } 9708 } 9709 9710 bool gap_secure_connection(hci_con_handle_t con_handle){ 9711 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9712 if (hci_connection == NULL) return 0; 9713 9714 switch (hci_connection->address_type){ 9715 #ifdef ENABLE_BLE 9716 case BD_ADDR_TYPE_LE_PUBLIC: 9717 case BD_ADDR_TYPE_LE_RANDOM: 9718 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9719 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9720 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 9721 return hci_connection->sm_connection.sm_connection_sc; 9722 #endif 9723 #ifdef ENABLE_CLASSIC 9724 case BD_ADDR_TYPE_SCO: 9725 case BD_ADDR_TYPE_ACL: 9726 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 9727 #endif 9728 default: 9729 return false; 9730 } 9731 } 9732 9733 bool gap_bonded(hci_con_handle_t con_handle){ 9734 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 9735 if (hci_connection == NULL) return 0; 9736 9737 #ifdef ENABLE_CLASSIC 9738 link_key_t link_key; 9739 link_key_type_t link_key_type; 9740 #endif 9741 switch (hci_connection->address_type){ 9742 #ifdef ENABLE_BLE 9743 case BD_ADDR_TYPE_LE_PUBLIC: 9744 case BD_ADDR_TYPE_LE_RANDOM: 9745 case BD_ADDR_TYPE_LE_PUBLIC_IDENTITY: 9746 case BD_ADDR_TYPE_LE_RANDOM_IDENTITY: 9747 return hci_connection->sm_connection.sm_le_db_index >= 0; 9748 #endif 9749 #ifdef ENABLE_CLASSIC 9750 case BD_ADDR_TYPE_SCO: 9751 case BD_ADDR_TYPE_ACL: 9752 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 9753 #endif 9754 default: 9755 return false; 9756 } 9757 } 9758 9759 #ifdef ENABLE_BLE 9760 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 9761 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 9762 if (sm_conn == NULL) return AUTHORIZATION_UNKNOWN; // wrong connection 9763 if (sm_conn->sm_connection_encrypted == 0u) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 9764 if (sm_conn->sm_connection_authenticated == 0u) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 9765 return sm_conn->sm_connection_authorization_state; 9766 } 9767 #endif 9768 9769 #ifdef ENABLE_CLASSIC 9770 uint8_t gap_sniff_mode_enter(hci_con_handle_t con_handle, uint16_t sniff_min_interval, uint16_t sniff_max_interval, uint16_t sniff_attempt, uint16_t sniff_timeout){ 9771 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9772 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9773 conn->sniff_min_interval = sniff_min_interval; 9774 conn->sniff_max_interval = sniff_max_interval; 9775 conn->sniff_attempt = sniff_attempt; 9776 conn->sniff_timeout = sniff_timeout; 9777 hci_run(); 9778 return 0; 9779 } 9780 9781 /** 9782 * @brief Exit Sniff mode 9783 * @param con_handle 9784 @ @return 0 if ok 9785 */ 9786 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 9787 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9788 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9789 conn->sniff_min_interval = 0xffff; 9790 hci_run(); 9791 return 0; 9792 } 9793 9794 uint8_t gap_sniff_subrating_configure(hci_con_handle_t con_handle, uint16_t max_latency, uint16_t min_remote_timeout, uint16_t min_local_timeout){ 9795 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9796 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9797 conn->sniff_subrating_max_latency = max_latency; 9798 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 9799 conn->sniff_subrating_min_local_timeout = min_local_timeout; 9800 hci_run(); 9801 return ERROR_CODE_SUCCESS; 9802 } 9803 9804 uint8_t gap_qos_set(hci_con_handle_t con_handle, hci_service_type_t service_type, uint32_t token_rate, uint32_t peak_bandwidth, uint32_t latency, uint32_t delay_variation){ 9805 hci_connection_t * conn = hci_connection_for_handle(con_handle); 9806 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9807 conn->qos_service_type = service_type; 9808 conn->qos_token_rate = token_rate; 9809 conn->qos_peak_bandwidth = peak_bandwidth; 9810 conn->qos_latency = latency; 9811 conn->qos_delay_variation = delay_variation; 9812 hci_run(); 9813 return ERROR_CODE_SUCCESS; 9814 } 9815 9816 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 9817 hci_stack->new_page_scan_interval = page_scan_interval; 9818 hci_stack->new_page_scan_window = page_scan_window; 9819 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 9820 hci_run(); 9821 } 9822 9823 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 9824 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 9825 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 9826 hci_run(); 9827 } 9828 9829 void gap_set_page_timeout(uint16_t page_timeout){ 9830 hci_stack->page_timeout = page_timeout; 9831 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 9832 hci_run(); 9833 } 9834 9835 #endif 9836 9837 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 9838 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 9839 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9840 if (le_device_db_index >= le_device_db_max_count()) return; 9841 uint8_t offset = le_device_db_index >> 3; 9842 uint8_t mask = 1 << (le_device_db_index & 7); 9843 hci_stack->le_resolving_list_add_entries[offset] |= mask; 9844 hci_stack->le_resolving_list_set_privacy_mode[offset] |= mask; 9845 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9846 // note: go back to remove entries, otherwise, a remove + add will skip the add 9847 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9848 } 9849 } 9850 9851 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 9852 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 9853 if (le_device_db_index >= le_device_db_max_count()) return; 9854 uint8_t offset = le_device_db_index >> 3; 9855 uint8_t mask = 1 << (le_device_db_index & 7); 9856 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 9857 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 9858 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_UPDATES_ENTRIES; 9859 } 9860 } 9861 9862 uint8_t gap_load_resolving_list_from_le_device_db(void){ 9863 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 9864 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 9865 } 9866 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 9867 // restart le resolving list update 9868 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 9869 } 9870 return ERROR_CODE_SUCCESS; 9871 } 9872 9873 void gap_set_peer_privacy_mode(le_privacy_mode_t privacy_mode ){ 9874 hci_stack->le_privacy_mode = privacy_mode; 9875 } 9876 #endif 9877 9878 #ifdef ENABLE_BLE 9879 #ifdef ENABLE_LE_CENTRAL 9880 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 9881 9882 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9883 9884 #if !defined(HAVE_MALLOC) && (!defined(MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES) || (MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES == 0)) 9885 // incorrect configuration: 9886 // - as MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES is not defined or zero this function always fails 9887 // - please set MAX_NR_PERIODIC_ADVERTISER_LIST_ENTRIES in btstack_config.h 9888 btstack_assert(false); 9889 #endif 9890 9891 // check if already in list 9892 btstack_linked_list_iterator_t it; 9893 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9894 while (btstack_linked_list_iterator_has_next(&it)) { 9895 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 9896 if (entry->sid != advertising_sid) { 9897 continue; 9898 } 9899 if (entry->address_type != address_type) { 9900 continue; 9901 } 9902 if (memcmp(entry->address, address, 6) != 0) { 9903 continue; 9904 } 9905 // disallow if already scheduled to add 9906 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 9907 return ERROR_CODE_COMMAND_DISALLOWED; 9908 } 9909 // still on controller, but scheduled to remove -> re-add 9910 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9911 return ERROR_CODE_SUCCESS; 9912 } 9913 // alloc and add to list 9914 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 9915 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 9916 entry->sid = advertising_sid; 9917 entry->address_type = address_type; 9918 (void)memcpy(entry->address, address, 6); 9919 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 9920 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 9921 return ERROR_CODE_SUCCESS; 9922 } 9923 9924 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9925 btstack_linked_list_iterator_t it; 9926 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9927 while (btstack_linked_list_iterator_has_next(&it)){ 9928 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9929 if (entry->sid != advertising_sid) { 9930 continue; 9931 } 9932 if (entry->address_type != address_type) { 9933 continue; 9934 } 9935 if (memcmp(entry->address, address, 6) != 0) { 9936 continue; 9937 } 9938 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9939 // remove from controller if already present 9940 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9941 } else { 9942 // directly remove entry from whitelist 9943 btstack_linked_list_iterator_remove(&it); 9944 btstack_memory_periodic_advertiser_list_entry_free(entry); 9945 } 9946 return ERROR_CODE_SUCCESS; 9947 } 9948 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9949 } 9950 9951 static void hci_periodic_advertiser_list_clear(void){ 9952 btstack_linked_list_iterator_t it; 9953 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 9954 while (btstack_linked_list_iterator_has_next(&it)){ 9955 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 9956 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 9957 // remove from controller if already present 9958 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 9959 continue; 9960 } 9961 // directly remove entry from whitelist 9962 btstack_linked_list_iterator_remove(&it); 9963 btstack_memory_periodic_advertiser_list_entry_free(entry); 9964 } 9965 } 9966 9967 uint8_t gap_periodic_advertiser_list_clear(void){ 9968 hci_periodic_advertiser_list_clear(); 9969 hci_run(); 9970 return ERROR_CODE_SUCCESS; 9971 } 9972 9973 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9974 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 9975 if (status){ 9976 return status; 9977 } 9978 hci_run(); 9979 return ERROR_CODE_SUCCESS; 9980 } 9981 9982 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 9983 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 9984 if (status){ 9985 return status; 9986 } 9987 hci_run(); 9988 return ERROR_CODE_SUCCESS; 9989 } 9990 9991 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 9992 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 9993 // abort if already active 9994 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 9995 return ERROR_CODE_COMMAND_DISALLOWED; 9996 } 9997 // store request 9998 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 9999 hci_stack->le_periodic_sync_options = options; 10000 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 10001 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 10002 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 10003 hci_stack->le_periodic_sync_skip = skip; 10004 hci_stack->le_periodic_sync_timeout = sync_timeout; 10005 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 10006 10007 hci_run(); 10008 return ERROR_CODE_SUCCESS; 10009 } 10010 10011 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 10012 // abort if not requested 10013 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 10014 return ERROR_CODE_COMMAND_DISALLOWED; 10015 } 10016 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 10017 hci_run(); 10018 return ERROR_CODE_SUCCESS; 10019 } 10020 10021 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 10022 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 10023 return ERROR_CODE_COMMAND_DISALLOWED; 10024 } 10025 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 10026 hci_run(); 10027 return ERROR_CODE_SUCCESS; 10028 } 10029 10030 #endif 10031 #endif 10032 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 10033 static hci_iso_stream_t * 10034 hci_iso_stream_create(hci_iso_type_t iso_type, hci_iso_stream_state_t state, uint8_t group_id, uint8_t stream_id) { 10035 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 10036 if (iso_stream != NULL){ 10037 iso_stream->iso_type = iso_type; 10038 iso_stream->state = state; 10039 iso_stream->group_id = group_id; 10040 iso_stream->stream_id = stream_id; 10041 iso_stream->cis_handle = HCI_CON_HANDLE_INVALID; 10042 iso_stream->acl_handle = HCI_CON_HANDLE_INVALID; 10043 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10044 } 10045 return iso_stream; 10046 } 10047 10048 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 10049 btstack_linked_list_iterator_t it; 10050 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10051 while (btstack_linked_list_iterator_has_next(&it)){ 10052 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10053 if (iso_stream->cis_handle == con_handle ) { 10054 return iso_stream; 10055 } 10056 } 10057 return NULL; 10058 } 10059 10060 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 10061 log_info("hci_iso_stream_finalize con_handle 0x%04x, group_id 0x%02x", iso_stream->cis_handle, iso_stream->group_id); 10062 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 10063 btstack_memory_hci_iso_stream_free(iso_stream); 10064 } 10065 10066 static void hci_iso_stream_finalize_by_type_and_group_id(hci_iso_type_t iso_type, uint8_t group_id) { 10067 btstack_linked_list_iterator_t it; 10068 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10069 while (btstack_linked_list_iterator_has_next(&it)){ 10070 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10071 if ((iso_stream->group_id == group_id) && 10072 (iso_stream->iso_type == iso_type)){ 10073 btstack_linked_list_iterator_remove(&it); 10074 btstack_memory_hci_iso_stream_free(iso_stream); 10075 } 10076 } 10077 } 10078 10079 static void hci_iso_stream_requested_finalize(uint8_t group_id) { 10080 btstack_linked_list_iterator_t it; 10081 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10082 while (btstack_linked_list_iterator_has_next(&it)){ 10083 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10084 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 10085 (iso_stream->group_id == group_id)){ 10086 btstack_linked_list_iterator_remove(&it); 10087 btstack_memory_hci_iso_stream_free(iso_stream); 10088 } 10089 } 10090 } 10091 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 10092 btstack_linked_list_iterator_t it; 10093 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10094 while (btstack_linked_list_iterator_has_next(&it)){ 10095 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10096 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 10097 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 10098 } 10099 } 10100 } 10101 10102 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 10103 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 10104 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 10105 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 10106 return (sdu_len_offset + 2 + sdu_len) == size; 10107 } 10108 10109 static void hci_iso_packet_handler(hci_iso_stream_t *iso_stream, uint8_t *packet, uint16_t size) { 10110 if (iso_stream == NULL){ 10111 log_error("acl_handler called with non-registered handle %u!" , READ_ISO_CONNECTION_HANDLE(packet)); 10112 return; 10113 } 10114 10115 if (hci_stack->iso_packet_handler == NULL) { 10116 return; 10117 } 10118 10119 // parse header 10120 uint16_t con_handle_and_flags = little_endian_read_16(packet, 0); 10121 uint16_t data_total_length = little_endian_read_16(packet, 2); 10122 uint8_t pb_flag = (con_handle_and_flags >> 12) & 3; 10123 10124 // assert packet is complete 10125 if ((data_total_length + 4u) != size){ 10126 return; 10127 } 10128 10129 if ((pb_flag & 0x01) == 0){ 10130 if (pb_flag == 0x02){ 10131 // The ISO_SDU_Fragment field contains a header and a complete SDU. 10132 if (hci_iso_sdu_complete(packet, size)) { 10133 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 10134 } 10135 } else { 10136 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 10137 if (size > sizeof(iso_stream->reassembly_buffer)){ 10138 return; 10139 } 10140 memcpy(iso_stream->reassembly_buffer, packet, size); 10141 // fix pb_flag 10142 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 10143 iso_stream->reassembly_pos = size; 10144 } 10145 } else { 10146 // ISO_SDU_Fragment contains continuation or last fragment of an SDU 10147 uint8_t ts_flag = (con_handle_and_flags >> 14) & 1; 10148 if (ts_flag != 0){ 10149 return; 10150 } 10151 // append fragment 10152 if (iso_stream->reassembly_pos == 0){ 10153 return; 10154 } 10155 10156 if ((iso_stream->reassembly_pos + data_total_length) > sizeof(iso_stream->reassembly_buffer)){ 10157 // reset reassembly buffer 10158 iso_stream->reassembly_pos = 0; 10159 return; 10160 } 10161 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], data_total_length); 10162 iso_stream->reassembly_pos += data_total_length; 10163 10164 // deliver if last fragment and SDU complete 10165 if (pb_flag == 0x03){ 10166 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 10167 // fix data_total_length 10168 little_endian_store_16(iso_stream->reassembly_buffer, 2, iso_stream->reassembly_pos - HCI_ISO_HEADER_SIZE); 10169 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 10170 } 10171 // reset reassembly buffer 10172 iso_stream->reassembly_pos = 0; 10173 } 10174 } 10175 } 10176 10177 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 10178 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10179 uint16_t pos = 0; 10180 event[pos++] = HCI_EVENT_META_GAP; 10181 event[pos++] = 4 + (2 * big->num_bis); 10182 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 10183 event[pos++] = status; 10184 event[pos++] = big->big_handle; 10185 event[pos++] = big->num_bis; 10186 uint8_t i; 10187 for (i=0;i<big->num_bis;i++){ 10188 little_endian_store_16(event, pos, big->bis_con_handles[i]); 10189 pos += 2; 10190 } 10191 hci_emit_btstack_event(event, pos, 0); 10192 } 10193 10194 static void hci_emit_cig_created(const le_audio_cig_t * cig, uint8_t status){ 10195 uint8_t event [6 + (MAX_NR_CIS * 2)]; 10196 uint16_t pos = 0; 10197 event[pos++] = HCI_EVENT_META_GAP; 10198 event[pos++] = 4 + (2 * cig->num_cis); 10199 event[pos++] = GAP_SUBEVENT_CIG_CREATED; 10200 event[pos++] = status; 10201 event[pos++] = cig->cig_id; 10202 event[pos++] = cig->num_cis; 10203 uint8_t i; 10204 for (i=0;i<cig->num_cis;i++){ 10205 little_endian_store_16(event, pos, cig->cis_con_handles[i]); 10206 pos += 2; 10207 } 10208 hci_emit_btstack_event(event, pos, 0); 10209 } 10210 10211 static uint16_t hci_setup_cis_created(uint8_t * event, hci_iso_stream_t * iso_stream, uint8_t status) { 10212 uint16_t pos = 0; 10213 event[pos++] = HCI_EVENT_META_GAP; 10214 event[pos++] = 8; 10215 event[pos++] = GAP_SUBEVENT_CIS_CREATED; 10216 event[pos++] = status; 10217 event[pos++] = iso_stream->group_id; 10218 event[pos++] = iso_stream->stream_id; 10219 little_endian_store_16(event, pos, iso_stream->cis_handle); 10220 pos += 2; 10221 little_endian_store_16(event, pos, iso_stream->acl_handle); 10222 pos += 2; 10223 little_endian_store_16(event, pos, iso_stream->iso_interval_1250us); 10224 pos += 2; 10225 event[pos++] = iso_stream->number_of_subevents; 10226 event[pos++] = iso_stream->burst_number_c_to_p; 10227 event[pos++] = iso_stream->burst_number_p_to_c; 10228 event[pos++] = iso_stream->flush_timeout_c_to_p; 10229 event[pos++] = iso_stream->flush_timeout_p_to_c; 10230 return pos; 10231 } 10232 10233 // emits GAP_SUBEVENT_CIS_CREATED after calling hci_iso_finalize 10234 static void hci_cis_handle_created(hci_iso_stream_t * iso_stream, uint8_t status){ 10235 // cache data before finalizing struct 10236 uint8_t event [17]; 10237 uint16_t pos = hci_setup_cis_created(event, iso_stream, status); 10238 btstack_assert(pos <= sizeof(event)); 10239 if (status != ERROR_CODE_SUCCESS){ 10240 hci_iso_stream_finalize(iso_stream); 10241 } 10242 hci_emit_btstack_event(event, pos, 0); 10243 } 10244 10245 static void hci_emit_big_terminated(const le_audio_big_t * big){ 10246 uint8_t event [4]; 10247 uint16_t pos = 0; 10248 event[pos++] = HCI_EVENT_META_GAP; 10249 event[pos++] = 2; 10250 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 10251 event[pos++] = big->big_handle; 10252 hci_emit_btstack_event(event, pos, 0); 10253 } 10254 10255 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 10256 uint8_t event [6 + (MAX_NR_BIS * 2)]; 10257 uint16_t pos = 0; 10258 event[pos++] = HCI_EVENT_META_GAP; 10259 event[pos++] = 4; 10260 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 10261 event[pos++] = status; 10262 event[pos++] = big_sync->big_handle; 10263 event[pos++] = big_sync->num_bis; 10264 uint8_t i; 10265 for (i=0;i<big_sync->num_bis;i++){ 10266 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 10267 pos += 2; 10268 } 10269 hci_emit_btstack_event(event, pos, 0); 10270 } 10271 10272 static void hci_emit_big_sync_stopped(uint8_t big_handle){ 10273 uint8_t event [4]; 10274 uint16_t pos = 0; 10275 event[pos++] = HCI_EVENT_META_GAP; 10276 event[pos++] = 2; 10277 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 10278 event[pos++] = big_handle; 10279 hci_emit_btstack_event(event, pos, 0); 10280 } 10281 10282 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 10283 uint8_t event[6]; 10284 uint16_t pos = 0; 10285 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 10286 event[pos++] = sizeof(event) - 2; 10287 event[pos++] = big->big_handle; 10288 event[pos++] = bis_index; 10289 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 10290 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 10291 } 10292 10293 static void hci_emit_cis_can_send_now(hci_con_handle_t cis_con_handle) { 10294 uint8_t event[4]; 10295 uint16_t pos = 0; 10296 event[pos++] = HCI_EVENT_CIS_CAN_SEND_NOW; 10297 event[pos++] = sizeof(event) - 2; 10298 little_endian_store_16(event, pos, cis_con_handle); 10299 hci_emit_btstack_event(&event[0], sizeof(event), 0); // don't dump 10300 } 10301 10302 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 10303 btstack_linked_list_iterator_t it; 10304 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10305 while (btstack_linked_list_iterator_has_next(&it)){ 10306 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10307 if ( big->big_handle == big_handle ) { 10308 return big; 10309 } 10310 } 10311 return NULL; 10312 } 10313 10314 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 10315 btstack_linked_list_iterator_t it; 10316 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 10317 while (btstack_linked_list_iterator_has_next(&it)){ 10318 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 10319 if ( big_sync->big_handle == big_handle ) { 10320 return big_sync; 10321 } 10322 } 10323 return NULL; 10324 } 10325 10326 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 10327 hci_stack->iso_packets_to_queue = num_packets; 10328 } 10329 10330 static le_audio_cig_t * hci_cig_for_id(uint8_t cig_id){ 10331 btstack_linked_list_iterator_t it; 10332 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_cigs); 10333 while (btstack_linked_list_iterator_has_next(&it)){ 10334 le_audio_cig_t * cig = (le_audio_cig_t *) btstack_linked_list_iterator_next(&it); 10335 if ( cig->cig_id == cig_id ) { 10336 return cig; 10337 } 10338 } 10339 return NULL; 10340 } 10341 10342 static void hci_iso_notify_can_send_now(void){ 10343 10344 // BIG 10345 10346 btstack_linked_list_iterator_t it; 10347 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10348 while (btstack_linked_list_iterator_has_next(&it)){ 10349 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10350 // track number completed packet timestamps 10351 if (big->num_completed_timestamp_current_valid){ 10352 big->num_completed_timestamp_current_valid = false; 10353 if (big->num_completed_timestamp_previous_valid){ 10354 // detect delayed sending of all BIS: tolerate up to 50% delayed event handling 10355 uint32_t iso_interval_missed_threshold_ms = big->params->sdu_interval_us * 3 / 2000; 10356 int32_t num_completed_timestamp_delta_ms = btstack_time_delta(big->num_completed_timestamp_current_ms, 10357 big->num_completed_timestamp_previous_ms); 10358 if (num_completed_timestamp_delta_ms > iso_interval_missed_threshold_ms){ 10359 // to catch up, skip packet on all BIS 10360 uint8_t i; 10361 for (i=0;i<big->num_bis;i++){ 10362 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10363 if (iso_stream){ 10364 iso_stream->num_packets_to_skip++; 10365 } 10366 } 10367 } 10368 } 10369 big->num_completed_timestamp_previous_valid = true; 10370 big->num_completed_timestamp_previous_ms = big->num_completed_timestamp_current_ms; 10371 } 10372 10373 if (big->can_send_now_requested){ 10374 // check if no outgoing iso packets pending and no can send now have to be emitted 10375 uint8_t i; 10376 bool can_send = true; 10377 uint8_t num_iso_queued_minimum = 0; 10378 for (i=0;i<big->num_bis;i++){ 10379 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10380 if (iso_stream == NULL) continue; 10381 // handle case where individual ISO packet was sent too late: 10382 // for each additionally queued packet, a new one needs to get skipped 10383 if (i==0){ 10384 num_iso_queued_minimum = iso_stream->num_packets_sent; 10385 } else if (iso_stream->num_packets_sent > num_iso_queued_minimum){ 10386 uint8_t num_packets_to_skip = iso_stream->num_packets_sent - num_iso_queued_minimum; 10387 iso_stream->num_packets_to_skip += num_packets_to_skip; 10388 iso_stream->num_packets_sent -= num_packets_to_skip; 10389 } 10390 // check if we can send now 10391 if ((iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 10392 can_send = false; 10393 break; 10394 } 10395 } 10396 if (can_send){ 10397 // propagate can send now to individual streams 10398 big->can_send_now_requested = false; 10399 for (i=0;i<big->num_bis;i++){ 10400 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10401 iso_stream->emit_ready_to_send = true; 10402 } 10403 } 10404 } 10405 } 10406 10407 if (hci_stack->hci_packet_buffer_reserved) return; 10408 10409 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 10410 while (btstack_linked_list_iterator_has_next(&it)){ 10411 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 10412 // report bis ready 10413 uint8_t i; 10414 for (i=0;i<big->num_bis;i++){ 10415 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 10416 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 10417 iso_stream->emit_ready_to_send = false; 10418 hci_emit_bis_can_send_now(big, i); 10419 if (hci_stack->hci_packet_buffer_reserved) return; 10420 } 10421 } 10422 } 10423 10424 10425 // CIS 10426 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 10427 while (btstack_linked_list_iterator_has_next(&it)) { 10428 hci_iso_stream_t *iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 10429 if ((iso_stream->can_send_now_requested) && 10430 (iso_stream->num_packets_sent < hci_stack->iso_packets_to_queue)){ 10431 iso_stream->can_send_now_requested = false; 10432 hci_emit_cis_can_send_now(iso_stream->cis_handle); 10433 if (hci_stack->hci_packet_buffer_reserved) return; 10434 } 10435 } 10436 } 10437 10438 static uint8_t gap_big_setup_iso_streams(uint8_t num_bis, uint8_t big_handle){ 10439 // make big handle unique and usuable for big and big sync 10440 if (hci_big_for_handle(big_handle) != NULL){ 10441 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10442 } 10443 if (hci_big_sync_for_handle(big_handle) != NULL){ 10444 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10445 } 10446 if (num_bis == 0){ 10447 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10448 } 10449 if (num_bis > MAX_NR_BIS){ 10450 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10451 } 10452 10453 // reserve ISO Streams 10454 uint8_t i; 10455 uint8_t status = ERROR_CODE_SUCCESS; 10456 for (i=0;i<num_bis;i++){ 10457 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_BIS, HCI_ISO_STREAM_STATE_REQUESTED, big_handle, i); 10458 if (iso_stream == NULL) { 10459 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10460 break; 10461 } 10462 } 10463 10464 // free structs on error 10465 if (status != ERROR_CODE_SUCCESS){ 10466 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_BIS, big_handle); 10467 } 10468 10469 return status; 10470 } 10471 10472 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 10473 uint8_t status = gap_big_setup_iso_streams(big_params->num_bis, big_params->big_handle); 10474 if (status != ERROR_CODE_SUCCESS){ 10475 return status; 10476 } 10477 10478 le_audio_big_t * big = storage; 10479 big->big_handle = big_params->big_handle; 10480 big->params = big_params; 10481 big->state = LE_AUDIO_BIG_STATE_CREATE; 10482 big->num_bis = big_params->num_bis; 10483 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10484 10485 hci_run(); 10486 10487 return ERROR_CODE_SUCCESS; 10488 } 10489 10490 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 10491 uint8_t status = gap_big_setup_iso_streams(big_sync_params->num_bis, big_sync_params->big_handle); 10492 if (status != ERROR_CODE_SUCCESS){ 10493 return status; 10494 } 10495 10496 le_audio_big_sync_t * big_sync = storage; 10497 big_sync->big_handle = big_sync_params->big_handle; 10498 big_sync->params = big_sync_params; 10499 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 10500 big_sync->num_bis = big_sync_params->num_bis; 10501 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10502 10503 hci_run(); 10504 10505 return ERROR_CODE_SUCCESS; 10506 } 10507 10508 uint8_t gap_big_terminate(uint8_t big_handle){ 10509 le_audio_big_t * big = hci_big_for_handle(big_handle); 10510 if (big == NULL){ 10511 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10512 } 10513 switch (big->state){ 10514 case LE_AUDIO_BIG_STATE_CREATE: 10515 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 10516 hci_emit_big_terminated(big); 10517 break; 10518 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10519 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10520 break; 10521 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10522 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10523 case LE_AUDIO_BIG_STATE_ACTIVE: 10524 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 10525 hci_run(); 10526 break; 10527 default: 10528 return ERROR_CODE_COMMAND_DISALLOWED; 10529 } 10530 return ERROR_CODE_SUCCESS; 10531 } 10532 10533 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 10534 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 10535 if (big_sync == NULL){ 10536 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10537 } 10538 switch (big_sync->state){ 10539 case LE_AUDIO_BIG_STATE_CREATE: 10540 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 10541 hci_emit_big_sync_stopped(big_handle); 10542 break; 10543 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 10544 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 10545 break; 10546 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 10547 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 10548 case LE_AUDIO_BIG_STATE_ACTIVE: 10549 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 10550 hci_run(); 10551 break; 10552 default: 10553 return ERROR_CODE_COMMAND_DISALLOWED; 10554 } 10555 return ERROR_CODE_SUCCESS; 10556 } 10557 10558 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 10559 le_audio_big_t * big = hci_big_for_handle(big_handle); 10560 if (big == NULL){ 10561 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10562 } 10563 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 10564 return ERROR_CODE_COMMAND_DISALLOWED; 10565 } 10566 big->can_send_now_requested = true; 10567 hci_iso_notify_can_send_now(); 10568 return ERROR_CODE_SUCCESS; 10569 } 10570 10571 uint8_t hci_request_cis_can_send_now_events(hci_con_handle_t cis_con_handle){ 10572 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_con_handle); 10573 if (iso_stream == NULL){ 10574 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10575 } 10576 if ((iso_stream->iso_type != HCI_ISO_TYPE_CIS) && (iso_stream->state != HCI_ISO_STREAM_STATE_ESTABLISHED)) { 10577 return ERROR_CODE_COMMAND_DISALLOWED; 10578 } 10579 iso_stream->can_send_now_requested = true; 10580 hci_iso_notify_can_send_now(); 10581 return ERROR_CODE_SUCCESS; 10582 } 10583 10584 uint8_t gap_cig_create(le_audio_cig_t * storage, le_audio_cig_params_t * cig_params){ 10585 if (hci_cig_for_id(cig_params->cig_id) != NULL){ 10586 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 10587 } 10588 if (cig_params->num_cis == 0){ 10589 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10590 } 10591 if (cig_params->num_cis > MAX_NR_CIS){ 10592 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 10593 } 10594 10595 // reserve ISO Streams 10596 uint8_t i; 10597 uint8_t status = ERROR_CODE_SUCCESS; 10598 for (i=0;i<cig_params->num_cis;i++){ 10599 hci_iso_stream_t * iso_stream = hci_iso_stream_create(HCI_ISO_TYPE_CIS,HCI_ISO_STREAM_STATE_REQUESTED, cig_params->cig_id, i); 10600 if (iso_stream == NULL) { 10601 status = ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10602 break; 10603 } 10604 } 10605 10606 // free structs on error 10607 if (status != ERROR_CODE_SUCCESS){ 10608 hci_iso_stream_finalize_by_type_and_group_id(HCI_ISO_TYPE_CIS, cig_params->cig_id); 10609 return status; 10610 } 10611 10612 le_audio_cig_t * cig = storage; 10613 cig->cig_id = cig_params->cig_id; 10614 cig->num_cis = cig_params->num_cis; 10615 cig->params = cig_params; 10616 cig->state = LE_AUDIO_CIG_STATE_CREATE; 10617 for (i=0;i<cig->num_cis;i++){ 10618 cig->cis_con_handles[i] = HCI_CON_HANDLE_INVALID; 10619 cig->acl_con_handles[i] = HCI_CON_HANDLE_INVALID; 10620 cig->cis_setup_active[i] = false; 10621 cig->cis_established[i] = false; 10622 } 10623 btstack_linked_list_add(&hci_stack->le_audio_cigs, (btstack_linked_item_t *) cig); 10624 10625 hci_run(); 10626 10627 return ERROR_CODE_SUCCESS; 10628 } 10629 10630 uint8_t gap_cig_remove(uint8_t cig_id){ 10631 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10632 if (cig == NULL){ 10633 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10634 } 10635 10636 // close active CIS 10637 uint8_t i; 10638 for (i=0;i<cig->num_cis;i++){ 10639 hci_iso_stream_t * stream = hci_iso_stream_for_con_handle(cig->cis_con_handles[i]); 10640 if (stream != NULL){ 10641 stream->state = HCI_ISO_STREAM_STATE_W2_CLOSE; 10642 } 10643 } 10644 cig->state = LE_AUDIO_CIG_STATE_REMOVE; 10645 10646 hci_run(); 10647 10648 return ERROR_CODE_SUCCESS; 10649 } 10650 10651 uint8_t gap_cis_create(uint8_t cig_id, hci_con_handle_t cis_con_handles [], hci_con_handle_t acl_con_handles []){ 10652 le_audio_cig_t * cig = hci_cig_for_id(cig_id); 10653 if (cig == NULL){ 10654 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10655 } 10656 10657 if (cig->state != LE_AUDIO_CIG_STATE_W4_CIS_REQUEST){ 10658 return ERROR_CODE_COMMAND_DISALLOWED; 10659 } 10660 10661 // store ACL Connection Handles 10662 uint8_t i; 10663 for (i=0;i<cig->num_cis;i++){ 10664 // check that all con handles exist and store 10665 hci_con_handle_t cis_handle = cis_con_handles[i]; 10666 if (cis_handle == HCI_CON_HANDLE_INVALID){ 10667 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10668 } 10669 uint8_t j; 10670 bool found = false; 10671 for (j=0;j<cig->num_cis;j++){ 10672 if (cig->cis_con_handles[j] == cis_handle){ 10673 cig->acl_con_handles[j] = acl_con_handles[j]; 10674 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10675 btstack_assert(iso_stream != NULL); 10676 iso_stream->acl_handle = acl_con_handles[j]; 10677 found = true; 10678 break; 10679 } 10680 } 10681 if (!found){ 10682 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 10683 } 10684 } 10685 10686 cig->state = LE_AUDIO_CIG_STATE_CREATE_CIS; 10687 hci_run(); 10688 10689 return ERROR_CODE_SUCCESS; 10690 } 10691 10692 static uint8_t hci_cis_accept_or_reject(hci_con_handle_t cis_handle, hci_iso_stream_state_t state){ 10693 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 10694 if (iso_stream == NULL){ 10695 // if we got a CIS Request but fail to allocate a hci_iso_stream_t object, we won't find it here 10696 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 10697 } 10698 10699 // set next state and continue 10700 iso_stream->state = state; 10701 hci_run(); 10702 return ERROR_CODE_SUCCESS; 10703 } 10704 10705 uint8_t gap_cis_accept(hci_con_handle_t cis_con_handle){ 10706 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_ACCEPT); 10707 } 10708 10709 uint8_t gap_cis_reject(hci_con_handle_t cis_con_handle){ 10710 return hci_cis_accept_or_reject(cis_con_handle, HCI_ISO_STREAM_W2_REJECT); 10711 } 10712 10713 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 10714 10715 // GAP Privacy - notify clients before random address update 10716 10717 static bool gap_privacy_client_all_ready(void){ 10718 // check if all ready 10719 btstack_linked_list_iterator_t it; 10720 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10721 while (btstack_linked_list_iterator_has_next(&it)) { 10722 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10723 if (client->state != GAP_PRIVACY_CLIENT_STATE_READY){ 10724 return false; 10725 } 10726 } 10727 return true; 10728 } 10729 10730 static void gap_privacy_clients_handle_ready(void){ 10731 // clear 'ready' 10732 btstack_linked_list_iterator_t it; 10733 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10734 while (btstack_linked_list_iterator_has_next(&it)) { 10735 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10736 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10737 } 10738 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_PRIVACY_PENDING; 10739 hci_run(); 10740 } 10741 10742 static void gap_privacy_clients_notify(bd_addr_t new_random_address){ 10743 btstack_linked_list_iterator_t it; 10744 btstack_linked_list_iterator_init(&it, &hci_stack->gap_privacy_clients); 10745 while (btstack_linked_list_iterator_has_next(&it)) { 10746 gap_privacy_client_t *client = (gap_privacy_client_t *) btstack_linked_list_iterator_next(&it); 10747 if (client->state == GAP_PRIVACY_CLIENT_STATE_IDLE){ 10748 client->state = GAP_PRIVACY_CLIENT_STATE_PENDING; 10749 (*client->callback)(client, new_random_address); 10750 } 10751 } 10752 if (gap_privacy_client_all_ready()){ 10753 gap_privacy_clients_handle_ready(); 10754 } 10755 } 10756 10757 void gap_privacy_client_register(gap_privacy_client_t * client){ 10758 client->state = GAP_PRIVACY_CLIENT_STATE_IDLE; 10759 btstack_linked_list_add(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10760 } 10761 10762 void gap_privacy_client_ready(gap_privacy_client_t * client){ 10763 client->state = GAP_PRIVACY_CLIENT_STATE_READY; 10764 if (gap_privacy_client_all_ready()){ 10765 gap_privacy_clients_handle_ready(); 10766 } 10767 } 10768 10769 void gap_privacy_client_unregister(gap_privacy_client_t * client){ 10770 btstack_linked_list_remove(&hci_stack->gap_privacy_clients, (btstack_linked_item_t *) client); 10771 } 10772 10773 #endif /* ENABLE_BLE */ 10774 10775 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 10776 void hci_setup_test_connections_fuzz(void){ 10777 hci_connection_t * conn; 10778 10779 // default address: 66:55:44:33:00:01 10780 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 10781 10782 // setup Controller info 10783 hci_stack->num_cmd_packets = 255; 10784 hci_stack->acl_packets_total_num = 255; 10785 10786 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 10787 addr[5] = 0x01; 10788 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10789 conn->con_handle = addr[5]; 10790 conn->state = RECEIVED_CONNECTION_REQUEST; 10791 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10792 10793 // setup incoming Classic SCO connection with con handle 0x0002 10794 addr[5] = 0x02; 10795 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10796 conn->con_handle = addr[5]; 10797 conn->state = RECEIVED_CONNECTION_REQUEST; 10798 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10799 10800 // setup ready Classic ACL connection with con handle 0x0003 10801 addr[5] = 0x03; 10802 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL, HCI_ROLE_SLAVE); 10803 conn->con_handle = addr[5]; 10804 conn->state = OPEN; 10805 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10806 10807 // setup ready Classic SCO connection with con handle 0x0004 10808 addr[5] = 0x04; 10809 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO, HCI_ROLE_SLAVE); 10810 conn->con_handle = addr[5]; 10811 conn->state = OPEN; 10812 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10813 10814 // setup ready LE ACL connection with con handle 0x005 and public address 10815 addr[5] = 0x05; 10816 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC, HCI_ROLE_SLAVE); 10817 conn->con_handle = addr[5]; 10818 conn->state = OPEN; 10819 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 10820 conn->sm_connection.sm_connection_encrypted = 1; 10821 } 10822 10823 void hci_free_connections_fuzz(void){ 10824 btstack_linked_list_iterator_t it; 10825 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 10826 while (btstack_linked_list_iterator_has_next(&it)){ 10827 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 10828 btstack_linked_list_iterator_remove(&it); 10829 btstack_memory_hci_connection_free(con); 10830 } 10831 } 10832 void hci_simulate_working_fuzz(void){ 10833 hci_stack->le_scanning_param_update = false; 10834 hci_init_done(); 10835 hci_stack->num_cmd_packets = 255; 10836 } 10837 #endif 10838